John R. Scheffer

(1) Zimmerman, H. E.; Rieke, R. D.; Scheffer, J. R. "Mechanistic and exploratory photochemistry. XXIII. Photochemical migratory aptitudes in cyclohexenones," J. Am. Chem. Soc. 1967, 89, 2033-2047.

(2) Wasserman, H. H.; Scheffer, J. R. "Singlet oxygen reactions from photoperoxides," J. Am. Chem. Soc. 1967, 89, 3073-3075.

(3) Scheffer, J. R.; Lungle, M. L. "Solution photochemistry. I. Photolysis of cis,cis-cyclodeca-3,8-diene-1,6-dione," Tetrahedron Lett. 1969, 845-848.

(4) Scheffer, J. R.; Boire, B. A. "Solution photochemistry. II. Photolysis of isogermacrone," Tetrahedron Lett. 1969, 4005-4008.

(5) Scheffer, J. R.; Ouchi, M. D. "Preparative scale oxygenations of organic molecules in the solid phase using microwave discharge-generated singlet oxygen," Tetrahedron Lett. 1970, 223-226.

(6) Scheffer, J. R.; Boire, B. A. "Solution photochemistry. III. Intramolecular cycloaddition of some acyclic 1,7-dienes," Tetrahedron Lett. 1970, 4741-4744.

(7) Scheffer, J. R.; Wostradowski, R. A.; Dooley, K. C. "Mechanism of the photochemical cyclization of nonconjugated dienes. Dimethyl 2,7-nonadiene-1,9-dioate," Journal of the Chemical Society [Section] D: Chemical Communications 1971, 1217-1218.

(8) Scheffer, J. R.; Wostradowski, R. A. "Photosensitized cyclization of the geometrical isomers of dimethyl octa-2,6-diene-1,8-dioate," Journal of the Chemical Society [Section] D: Chemical Communications 1971, 144-146.

(9) Scheffer, J. R.; Boire, B. A. "Solution photochemistry. V. Differences in singlet and triplet state reactivities of some acyclic 1,7-dienes," J. Am. Chem. Soc. 1971, 93, 5490-5495.

(10) Scheffer, J. R.; Trotter, J.; Wostradowski, R. A.; Gibbons, C. S.; Bhandari, K. S. "Solution photochemistry. VI. Novel photorearrangement of the butadiene-benzoquinone Diels-Alder adduct," J. Am. Chem. Soc. 1971,93, 3813-3814.

(11) Wasserman, H. H.; Scheffer, J. R.; Cooper, J. L. "Singlet oxygen reactions with 9,10-diphenylanthracene peroxide," J. Am. Chem. Soc. 1972,94, 4991-4996.

(12) Scheffer, J. R.; Wostradowski, R. A. "Solution photochemistry. IX. Novel double rearrangement of a b-g-unsaturated ketone," Tetrahedron Lett. 1972, 677-680.

(13) Scheffer, J. R.; Bhandari, K. S.; Gayler, R. E.; Wiekenkamp, R. H. "Solution photochemistry. VIII. Novel rearrangements of some substituted butadiene-benzoquinone Diels-Alder adducts," J. Am. Chem. Soc. 1972, 94, 285-287.

(14) Scheffer, J. R.; Wostradowski, R. A. "Solution photochemistry. X. Effects of double-bond geometry and of increasing double-bond separation on the photochemical reactions of acyclic nonconjugated dienes," J. Org. Chem. 1972, 37, 4317.

(15) Scheffer, J. R.; Bhandari, K. S.; Ngan, Y.-M.; Schmidt, D. K. "Solution photochemistry. XI. Irradiation of substituted butadiene-methyl vinyl ketone Diels-Alder adducts," Tetrahedron Lett. 1973, 1413-1416.

(16) Scheffer, J. R.; Trotter, J.; Gayler, R. E.; Bear, C. A. "Solution photochemistry. XII. Novel tricyclic ring systems from the photolysis of Diels-Alder adducts," Tetrahedron Lett. 1973, 2871-2874.

(17) Scheffer, J. R.; Jennings, B. M. "Photochemical entry into the tetracyclo[4.4.0.0.3,904,8]decane ring system," J. Chem. Soc., Chem. Commun. 1975, 609-610.

(18) Scheffer, J. R.; Bhandari, K. S.; Gayler, R. E.; Wostradowski, R. A. "Solution photochemistry. XIII. Hydrogen abstraction reaction proceeding through five-membered transition states. Mechanistic studies indicating conformational control," J. Am. Chem. Soc. 1975,97, 2178-2189.

(19) Ngan, Y.-M.; Rettig, S. J.; Scheffer, J. R.; Trotter, J. "Two-step synthesis and crystal and molecular structure of tetracyclo[6.4.0.02,11.04,9]dodec-6-ene-3,10-dione," Can. J. Chem. 1975,53, 2068-2075.

(20) Scheffer, J. R.; Bhandari, K. S. "3,4-Dimethyltricyclo[4.4.0.02,8]dec-3-ene-7,10-dione [synthesis]," Organic Photochemical Syntheses 1976, 2, 54-56.

(21) Scheffer, J. R.; Gayler, R. E. "4-Methyltricyclo[5.3.1.05,10]undec-2-ene-6,9-dione [synthesis]," Organic Photochemical Syntheses 1976, 2, 80-81.

(22) Dzakpasu, A. A.; Phillips, S. E. V.; Scheffer, J. R.; Trotter, J. "Intramolecular photochemical hydrogen abstraction reactions in the solid state. Correlation with x-ray crystal structure data," J. Am. Chem. Soc. 1976, 98, 6049-6051.

(23) Scheffer, J. R.; Jennings, B. M.; Louwerens, J. P. "Organic photochemistry. 16. Photochemical hydrogen abstraction reactions proceeding through five-membered transition states. Product control through restriction of rotation in diradical intermediates," J. Am. Chem. Soc. 1976, 98, 7040-7048.

(24) Scheffer, J. R.; Gaylor, R. E.; Zakouras, T.; Dzakpasu, A. A. "Ring-strain-promoted 1,2-carbanionic rearrangements," J. Am. Chem. Soc. 1977, 99, 7726-7728.

(25) Scheffer, J. R.; Dzakpasu, A. A. "Organic photochemistry in the solid state. The distance and geometric requirements for intramolecular hydrogen abstraction reactions. Structure-reactivity relationships based on x-ray crystallographic data," J. Am. Chem. Soc. 1978,100, 2163-2173.

(26) Appel, W. K.; Greenhough, T. J.; Scheffer, J. R.; Trotter, J. "Crystal lattice control of a unimolecular photorearrangement. Divergent behavior of a b,g-unsaturated ketone in solution and the solid state," J. Am. Chem. Soc. 1979, 101, 213-215.

(27) Greenhough, T. J.; Scheffer, J. R.; Trotter, J.; Wong, Y.-F. "Formation of twistane derivatives via a novel base-catalyzed rearrangement. X-ray crystal structure of 1,3,4,6,8-pentamethyl-exo-9-methylenetricyclo[4.4.0.03,8]decane-2,5-dione,"J. Chem. Soc., Chem. Commun. 1979, 933-934.

(28) Appel, W. K.; Greenhough, T. J.; Scheffer, J. R.; Trotter, J.; Walsh, L. "Organic photochemistry in the solid state," Prepr. - Am. Chem. Soc., Div. Pet. Chem. 1979, 24, 160-165.

(29) Greenhough, T. J.; Scheffer, J. R.; Trotter, J.; Walsh, L. "Photochemical ring expansion of a bridged cyclobutanone. Crystal and molecular structure of the photoproduct acetal," Can. J. Chem. 1979,57, 2669-2676.

(30) Piers, E.; Abeysekera, B.; Scheffer, J. R. "Preparation of, and alkylation of enolate anions with, dimethyl 3-bromo-2-ethoxypropenylphosphonate. An efficient, convergent synthesis of 2-cyclopenten-1-ones," Tetrahedron Lett. 1979, 3279-3282.

(31) Scheffer, J. R.; Wong, Y.-F. "Conformational and electronic control of anionic rearrangements of 4-hydroxycyclohex-2-en-1-ones," J. Am. Chem. Soc. 1980, 102, 6604-6605.

(32) Scheffer, J. R. "Crystal lattice control of unimolecular photorearrangements," Acc. Chem. Res. 1980, 13, 283-290.

(33) Appel, W. K.; Greenhough, T. J.; Scheffer, J. R.; Trotter, J.; Walsh, L. "Crystal lattice control of unimolecular photorearrangements. Differences in cyclohexenone photochemistry in solution and the solid state. Solid-state results," J. Am. Chem. Soc. 1980, 102, 1160-1161.

(34) Appel, W. K.; Greenhough, T. J.; Scheffer, J. R.; Trotter, J.; Walsh, L. "Crystal lattice control of unimolecular photorearrangements. Differences in cyclohexenone photochemistry in solution and the solid state. Solution results," J. Am. Chem. Soc. 1980, 102, 1158-1160.

(35) McDowell, C. A.; Naito, A.; Scheffer, J. R.; Wong, Y.-F. "The conformational analysis of tetrahydronaphthoquinones using high resolution solid state carbon-13 NMR spectroscopy," Tetrahedron Lett. 1981, 22, 4779-4782.

(36) Jiang, Z. Q.; Scheffer, J. R.; Secco, A. S.; Trotter, J. "Crystal engineering in the solid state photochemistry of cyclohexenones," Tetrahedron Lett. 1981, 22, 891-894.

(37) Herbert, D. J.; Scheffer, J. R.; Secco, A. S.; Trotter, J. "The synthesis and x-ray crystal structure of a tetracyclo[4.2.1.1.2,5.03,7]decane derivative. A rigid, twist boat-containing ring system," Tetrahedron Lett. 1981, 22, 2941-2944.

(38) Scheffer, J. R.; Trotter, J.; Appel, W. K.; Greenhough, T. J.; Jiang, Z. Q.; Secco, A. S.; Walsh, L. "Crystal lattice control of unimolecular photorearrangements. Medium-dependent photochemistry of cyclohexenones," Mol. Cryst. Liq. Cryst. 1983, 93, 1-15.

(39) Appel, W. K.; Jiang, Z. Q.; Scheffer, J. R.; Walsh, L. "Crystal lattice control of unimolecular photorearrangements. Medium-dependent photochemistry of cyclohexenones," J. Am. Chem. Soc. 1983,105, 5354-5363.

(40) Ariel, S.; Scheffer, J. R.; Totter, J.; Wong, Y. F. "High-resolution carbon-13 NMR spectroscopy of oxygenated hexalin, octalin and decalin derivatives in solution and the solid state: conformational analysis and crystal lattice effects," Tetrahedron Lett. 1983, 24, 4555-4558.

(41) Jiang, Z. Q.; Scheffer, J. R.; Secco, A. S.; Trotter, J.; Wong, Y. F. "Interannular dehydration as a route to novel polycyclic ring systems," J. Chem. Soc., Chem. Commun. 1983, 773-774.

(42) Ariel, S.; Ramamurthy, V.; Scheffer, J. R.; Trotter, J. "Norrish type II reaction in the solid state: involvement of a boatlike reactant conformation," J. Am. Chem. Soc. 1983, 105, 6959-6960.

(43) Ariel, S.; Askari, S.; Scheffer, J. R.; Trotter, J.; Walsh, L. "Steric compression control of photochemical reactions in the solid state," J. Am. Chem. Soc. 1984, 106, 5726-5728.

(44) Ariel, S.; Evans, S.; Hwang, C.; Jay, J.; Scheffer, J. R.; Trotter, J.; Wong, Y. F. "Conformation-specific photochemistry in the solid state," Tetrahedron Lett. 1985, 26, 965-968.

(45) Greenhough, T. J.; Scheffer, J. R.; Secco, A. S.; Trotter, J.; Walsh, L. "The effect of temperature on competing photochemical hydrogen abstraction reactions in the solid state," Isr. J. Chem. 1985,25, 297-299.

(46) Goswami, P. C.; De Mayo, P.; Ramnath, N.; Bernard, G.; Omkaram, N.; Scheffer, J. R.; Wong, Y. F. "Modification of photochemical reactivity through the use of clathrates: the Norrish type I and type II reactions in Dianin's compound," Can. J. Chem. 1985, 63, 2719-2725.

(47) Evans, S.; Omkaram, N.; Scheffer, J. R.; Trotter, J. "Stereoselectivity reversal of a photochemical reaction in the solid state," Tetrahedron Lett. 1985, 26, 5903-5906.

(48) Ariel, S.; Askari, S.; Scheffer, J. R.; Trotter, J.; Walsh, L. "Steric compression control. A quantitative approach to reaction selectivity in solid state chemistry," ACS Symp. Ser. 1985,278, 243-256.

(49) Sacks, S. L.; Scheffer, J. R.; Teh, C. Z.; Tse, A. "Synthesis and antiviral activity of 11-azapentacyclo[6.2.1.0.2,70.4,1005,9]decane," J. Med. Chem. 1985, 28, 819-821.

(50) Askari, S.; Lee, S.; Perkins, R. R.; Scheffer, J. R. "Trapping of o-quinodimethane with p-quinones: synthesis of tetrahydro-1,4-anthracenediones," Can. J. Chem. 1985, 63, 3526-3529.

(51) Ariel, S.; Askari, S. H.; Scheffer, J. R.; Trotter, J. "Cyclopropanol formation via b-hydrogen atom abstraction: the five membered transition state analog of the Norrish type II reaction," Tetrahedron Lett. 1986, 27, 783-786.

(52) Ariel, S.; Evans, S.; Omkaram, N.; Scheffer, J. R.; Trotter, J. "The importance of nonminimum energy reactant conformations in the Norrish type II reaction," J. Chem. Soc., Chem. Commun. 1986, 375-377.

(53) Ounsworth, J.; Scheffer, J. R. "Intramolecular abstraction of aldehydic hydrogen by ketone triplets: formation of 2-hydroxy-2-phenylcycloalkanones," J. Chem. Soc., Chem. Commun. 1986, 232-233.

(54) Evans, S. V.; Omkaram, N.; Scheffer, J. R.; Trotter, J. "Reactivity differences between dimorphs in a crystalline-phase Norrish type II reaction," Tetrahedron Lett. 1986, 27, 1419-1422.

(55) Scheffer, J. R.; Trotter, J.; Omkaram, N.; Evans, S. V.; Ariel, S. "A study of the Norrish type II reaction in the solid state," Mol. Cryst. Liq. Cryst. 1986, 134, 169-196.

(56) Evans, S. V.; Garcia-Garibay, M.; Omkaram, N.; Scheffer, J. R.; Trotter, J.; Wireko, F. "Use of chiral single crystals to convert achiral reactants to chiral products in high optical yield: application to the di-p-methane and Norrish type II photorearrangements," J. Am. Chem. Soc. 1986, 108, 5648-5650.

(57) Garcia-Garibay, M.; Scheffer, J. R.; Trotter, J.; Wireko, F. "Generation of optical activity through solid state reaction of a racemic mixture that crystallizes in a chiral space group," Tetrahedron Lett. 1987, 28, 4789-4792.

(58) Scheffer, J. R. "Geometric requirements for intramolecular photochemical hydrogen atom abstraction: studies based on a combination of solid state chemistry and x-ray crystallography," Stud. Org. Chem. (Amsterdam) 1987, 32, 1-45.

(59) Scheffer, J. R.; Garcia-Garibay, M.; Nalamasu, O. "Influence of the molecular crystalline environment on organic photorearrangements," Organic Photochemistry 1987, 8, 249-347.

(60) Ariel, S.; Askari, S. H.; Scheffer, J. R.; Trotter, J.; Wireko, F. "Reaction pathway in the photoconversion of a tetrahydroanthracenedione (I) to its solid-state photoproduct (II)," Acta Crystallogr., Sect. B: Struct. Sci. 1987, B43, 532-537.

(61) Ariel, S.; Askari, S.; Evans, S. V.; Hwang, C.; Jay, J.; Scheffer, J. R.; Trotter, J.; Walsh, L.; Wong, Y. F. "Reaction selectivity in solid state photochemistry," Tetrahedron 1987, 43, 1253-1272.

(62) Ariel, S.; Askari, S. H.; Scheffer, J. R.; Trotter, J.; Wireko, F. "A temperature-, multiplicity-, and phase-dependent photorearrangement," J. Am. Chem. Soc. 1987, 109, 4623-4626.

(63) Scheffer, J.; Editor Tetrahedron Symposia-in-Print, No. 29: Organic Chemistry in Anisotropic Media. [In: Tetrahedron, 1987; 43(7)], 1987.

(64) Garcia-Garibay, M.; Scheffer, J. R.; Trotter, J.; Wireko, F. "Triplet energy sensitization of a crystalline phase photorearrangement," Tetrahedron Lett. 1987, 28, 1741-1744.

(65) Garcia-Garibay, M.; Scheffer, J. R.; Trotter, J.; Wireko, F. "Addition of bromine gas to crystalline dibenzobarrelene: an enantioselective carbocation rearrangement in the solid state," Tetrahedron Lett. 1988, 29, 1485-1488.

(66) Scheffer, J. R.; Trotter, J. "Generation and behavior of biradical intermediates in crystalline media," Reviews of Chemical Intermediates 1988, 9, 271-305.

(67) Ariel, S.; Evans, S. V.; Garcia-Garibay, M.; Harkness, B. R.; Omkaram, N.; Scheffer, J. R.; Trotter, J. "The generation of 1,4-biradicals in rigid media: crystal structure-solid state reactivity correlations," J. Am. Chem. Soc. 1988, 110, 5591-5592.

(68) Garcia-Garibay, M.; Scheffer, J. R.; Trotter, J.; Wireko, F. "Intermolecular steric effects on unimolecular rearrangements in crystalline media," Tetrahedron Lett. 1988, 29, 2041-2044.

(69) Scheffer, J. R.; Trotter, J. "The solid state photochemistry of tetrahydronaphthoquinones: crystal structure-reactivity relationships," Chem. Quinonoid Compd. 1988, 2, 1199-1230.

(70) Scheffer, J. R.; Trotter, J.; Garcia-Garibay, M.; Wireko, F. "Studies on the di-p-methane photorearrangement in the solid state," Mol. Cryst. Liq. Cryst. 1988, 156, 63-84.

(71) Chen, J.; Garcia-Garibay, M.; Scheffer, J. R. "Chiral handle-induced diastereoselectivity in an organic photorearrangement: solution versus solid state results," Tetrahedron Lett. 1989,30, 6125-6128.

(72) Gudmundsdottir, A. D.; Scheffer, J. R. "A comparative study of an organic photorearrangement in solution, in the pure crystalline phase and in a polymer film," Tetrahedron Lett. 1989, 30, 419-422.

(73) Ariel, S.; Gaia-Garibay, M.; Scheffer, J. R.; Trotter, J. "Crystal structure of a cyclization photoproduct of 1-(4-chlorophenyl)-2-cyclooctylethanone, and reaction pathway in Norrish type II cyclizations," Acta Crystallogr., Sect. B: Struct. Sci. 1989, B45, 153-158.

(74) Garcia-Garibay, M.; Scheffer, J. R.; Trotter, J.; Wireko, F. "Determination of the absolute steric course of a solid-state photorearrangement by anomalous dispersion x-ray crystallography," J. Am. Chem. Soc. 1989, 111, 4985-4986.

(75) Ariel, S.; Askari, S.; Scheffer, J. R.; Trotter, J. "Latent photochemical hydrogen abstraction reactions realized in crystalline media," J. Org. Chem. 1989, 54, 4324-4330.

(76) Gudmundsdottir, A. D.; Scheffer, J. R. "Observation of a photorearrangement unique to the polymer matrix," Tetrahedron Lett. 1989,30, 423-424.

(77) Scheffer, J. R.; Yap, M. "Photochemical pathways to benzosemibullvalene derivatives from dimethyl 1,4-dihydro-1,4-ethenonaphthalene-2,3-dicarboxylate," J. Org. Chem. 1989,54, 2561-2563.

(78) Garcia-Garibay, M.; Scheffer, J. R.; Watson, D. G. "Prototropic control of di-p-methane photorearrangement," J. Chem. Soc., Chem. Commun. 1989, 600-601.

(79) Ariel, S.; Garcia-Garibay, M.; Scheffer, J. R.; Trotter, J. "Structure of a cyclization photoproduct of 1-(4-chlorophenyl)-2-cyclohexylethanone: (1a,6b)-7a-(4-chlorophenyl)bicyclo[4.2.0]octan-7b-ol," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1989, C45, 1970-1973.

(80) Pokkuluri, P. R.; Scheffer, J. R.; Trotter, J. "Surface versus bulk reactivity in solid-state organic chemistry," Tetrahedron Lett. 1989,30, 1601-1604.

(81) Chen, J.; Pokkuluri, P. R.; Scheffer, J. R.; Trotter, J. "Absolute asymmetric induction differences in dual pathway photoreactions," Tetrahedron Lett. 1990, 31, 6803-6806.

(82) Gudmundsdottir, A. D.; Scheffer, J. R. "Asymmetric induction in the solid state photochemistry of salts of carboxylic acids with optically active amines," Tetrahedron Lett. 1990, 31, 6807-6810.

(83) Scheffer, J. R.; Gudmundsdottir, A. D. "Chemical reactivity in solution, in crystalline solids and in polymer films: a comparative study," Mol. Cryst. Liq. Cryst. 1990, 186, 19-30.

(84) Lewis, T. J.; Rettig, S. J.; Scheffer, J. R.; Trotter, J.; Wireko, F. "Conformation-reactivity correlations in the solid-state photochemistry of macrocyclic diketones," J. Am. Chem. Soc. 1990,112, 3679-3680.

(85) Garcia-Garibay, M.; Scheffer, J. R.; Trotter, J.; Wireko, F. C. "Crystal structures and solid-state photochemistry of an unsymmetrically substituted dibenzobarrelene and its two photoproducts (dibenzosemibullvalenes)," Acta Crystallogr., Sect. B: Struct. Sci. 1990,B46, 79-87.

(86) Garcia-Garibay, M.; Scheffer, J. R.; Trotter, J.; Wireko, F. C. "Crystal structures and solid-state photochemistry of dimorphic dibenzobarrelenes: enantioselectivity of the di-p-methane rearrangement in the solid state," Acta Crystallogr., Sect. B: Struct. Sci. 1990,B46, 431-440.

(87) Pokkuluri, P. R.; Scheffer, J. R.; Trotter, J. "Novel photorearrangements of bridgehead-substituted dibenzobarrelene derivatives in solution and the solid state," J. Am. Chem. Soc. 1990,112, 3676-3677.

(88) Gudmundsdottir, A. D.; Scheffer, J. R. "Asymmetric induction in the solid state photochemistry of ammonium salts," Photochem. Photobiol. 1991, 54, 535-538.

(89) Lewis, T. J.; Rettig, S. J.; Scheffer, J. R.; Trotter, J. "The chemical consequences of conformational polymorphism: the phase-transition-dependent photochemistry of crystalline 1,14-cyclohexacosanedione," J. Am. Chem. Soc. 1991, 113, 8180-8181.

(90) Chen, J.; Pokkuluri, P. R.; Scheffer, J. R.; Trotter, J. "The novel solid-state and solution-phase photochemistry of dimethyl 9-(chloromethyl)-9,10-dihydro-9,10-ethenoanthracene-11,12-dicarboxylate,"J. Photochem. Photobiol., A 1991, 57, 21-26.

(91) Ramamurthy, V.; Lei, X.-G.; Turro, N. J.; Lewis, T. J.; Scheffer, J. R. "Photochemistry of macrocyclic ketones within zeolites: competition between Norrish type I and type II reactivity," Tetrahedron Lett. 1991, 32, 7675-7678.

(92) Chen, J.; Hwang, C.; Scheffer, J. R.; Trotter, J. "Structure and photochemistry of a cyclohexenone and its solid-state photoproduct," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1991, C47, 2417-2419.

(93) Chen, J.; Pokkuluri, P. R.; Scheffer, J. R.; Trotter, J. "Control of regioselectivity through relief of steric crowding in the di-p-methane photorearrangement of 9,10-ethenoanthracene derivatives," Tetrahedron Lett. 1992, 33, 1535-1538.

(94) Jones, R.; Scheffer, J. R.; Trotter, J.; Yang, J. "Crystal to molecular chirality transfer: supramolecular photochemistry of crystalline carboxylate salts," Tetrahedron Lett. 1992, 33, 5481-5484.

(95) Lewis, T. J.; Rettig, S. J.; Scheffer, J. R.; Trotter, J. "Crystallographic determination of the preferred geometry for intramolecular hydrogen atom abstraction in 1,8-cyclohexadecanedione," Molecular Crystals and Liquid Crystals Science and Technology, Section A: Molecular Crystals and Liquid Crystals 1992, 219, 17-28.

(96) Chen, J.; Scheffer, J. R.; Trotter, J. "Differences in photochemical reactivity of 9,10-ethenoanthracene derivatives in liquid and crystalline media," Tetrahedron 1992, 48, 3251-3274.

(97) Hollingsworth, M. D.; Scheffer, J. R.; Editors Proceedings of the 10th International Conference on the Chemistry of the Organic Solid State, University of British Columbia, Vancouver, Canada, July 7-12, 1991, Part 1. [In: Mol. Cryst. Lig. Cryst. Sci. Technol. Sect. A, 1992; 211], 1992.

(98) Garcia-Garibay, M. A.; Scheffer, J. R.; Watson, D. G. "Prototropic control of organic photochemistry. Hydrogen bonding effects on the di-p-methane photorearrangement," J. Org. Chem. 1992, 57, 241-247.

(99) Pokkuluri, P. R.; Scheffer, J. R.; Trotter, J.; Yap, M. "Selective solid-state photorearrangement through the less stable of two possible biradical intermediates," J. Org. Chem. 1992, 57, 1486-1494.

(100) Ariel, S.; Chen, J.; Scheffer, J. R.; Trotter, J. "Structure of 4,4-diphenylcyclohex-2-en-1-one (monoclinic form)," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1992, C48, 400-402.

(101) Pokkuluri, P. R.; Scheffer, J. R.; Trotter, J. "Crystal structure and photochemistry of dimethyl 9,10-dichloro-9,10-dihydro-9,10-ethenoanthracene-11,12-dicarboxylate," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1993, C49, 2014-2018.

(102) Pokkuluri, P. R.; Scheffer, J. R.; Trotter, J. "Crystal structure correlations in the photochemistry of dimethyl 9,10-dimethyl-9,10-dihydro-9,10-ethenoanthracene-11,12-dicarboxylate," Acta Crystallogr., Sect. B: Struct. Sci. 1993, B49, 107-116.

(103) Chen, J.; Pokkuluri, P. R.; Scheffer, J. R.; Trotter, J. "Crystal structure correlations in the photochemistry of dimethyl 9-chloromethyl-9,10-dihydro-9,10-ethenoanthracene-11,12-dicarboxylate," Acta Crystallogr., Sect. B: Struct. Sci. 1993, B49, 905-909.

(104) Pokkuluri, P. R.; Scheffer, J. R.; Trotter, J. "Crystal structure correlations in the photochemistry of dimethyl 9-phenyl-9,10-dihydro-9,10-ethenoanthracene-11,12-dicarboxylate," Acta Crystallogr., Sect. B: Struct. Sci. 1993, B49, 754-760.

(105) Pokkuluri, P. R.; Scheffer, J. R.; Trotter, J. "Cyclooctatetraene formation in the photolyses of dibenzobarrelene diesters," Acta Crystallogr., Sect. B: Struct. Sci. 1993, B49, 1049-1052.

(106) Jones, R.; Scheffer, J. R.; Trotter, J.; Yap, M. "Novel photochemistry of a sterically crowded monobenzobarrelene derivative," Tetrahedron Lett. 1993, 34, 31-34.

(107) Caswell, L.; Garcia-Garibay, M. A.; Scheffer, J. R.; Trotter, J. "Optical activity can be created from \"nothing\"," J. Chem. Educ. 1993,70, 785-787.

(108) Chen, J.; Pokkuluri, P. R.; Scheffer, J. R.; Trotter, J. "Structure of dimethyl 9-formyl-9,10-dihydro-9,10-ethenoanthracene-11,12-dicarboxylate," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1993, C49, 2018-2019.

(109) Rattray, G.; Yang, J.; Gudmundsdottir, A. D.; Scheffer, J. R. "Substituent effects on the di-p-methane photorearrangement of 9,10-ethenoanthracene derivatives," Tetrahedron Lett. 1993,34, 35-38.

(110) Fu, T. Y.; Liu, Z.; Scheffer, J. R.; Trotter, J. "Supramolecular photochemistry of crystalline host-guest assemblies: absolute asymmetric photorearrangement of the host component," J. Am. Chem. Soc. 1993, 115, 12202-12203.

(111) Chen, J.; Pokkuluri, P. R.; Scheffer, J. R.; Trotter, J. "12-Methyl 9-hydroxymethyl-9,10-dihydro-9,10-ethenoanthracene-11,12-dicarboxylate lactone," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1994,C50, 576-578.

(112) Gudmundsdottir, A. D.; Li, W.; Scheffer, J. R.; Rettig, S.; Trotter, J. "Asymmetric induction in the photochemistry of crystalline salts: structure-reactivity correlations," Molecular Crystals and Liquid Crystals Science and Technology, Section A: Molecular Crystals and Liquid Crystals 1994, 240, 81-88.

(113) Borecka, B.; Fu, T. Y.; Gudmundsdottir, A. D.; Jones, R.; Liu, Z.; Scheffer, J. R.; Trotter, J. "Cocrystallization with Phosphine Oxide Derivatives as a Means of Modifying Photochemical Reactivity in the Solid State," Chem. Mater. 1994, 6, 1094-1095.

(114) Jones, R.; Scheffer, J. R.; Trotter, J.; Yap, M. "Crystal structure and photochemistry of dimethyl 1,4-dihydro-1,4,5,8-tetramethyl-1,4-ethenonaphthalene-2,3-dicarboxylate,"Acta Crystallogr., Sect. B: Struct. Sci. 1994, B50, 597-600.

(115) Fu, T. Y.; Scheffer, J. R.; Trotter, J. "Crystal structure-reactivity correlations in the solid-state photochemistry of N-tert-butylsuccinimide," Can. J. Chem. 1994, 72, 1952-1960.

(116) Jones, R.; Scheffer, J. R.; Trotter, J.; Yang, J. "Crystal structures, chiralities and photochemistry of two polymorphs of L-prolinolium a-adamantylacetophenone-p-carboxylate," Acta Crystallogr., Sect. B: Struct. Sci. 1994, B50, 601-607.

(117) Pokkuluri, P. R.; Scheffer, J. R.; Trotter, J. "Dimethyl 9-phenyl-1,4-dihydro-1,4-ethenoanthracene-11,12-dicarboxylate," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1994, C50, 415-417.

(118) Pokkuluri, P. R.; Scheffer, J. R.; Trotter, J.; Yap, M. "An ethenonaphthalene and one of its photolysis products," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1994, C50, 578-581.

(119) Gudmundsdottir, A. D.; Scheffer, J. R.; Trotter, J. "Ionic chiral handle-induced solid state asymmetric synthesis: origin of the asymmetric induction elucidated through absolute configuration correlation studies," Tetrahedron Lett. 1994, 35, 1397-1400.

(120) Borecka, B.; Gudmundsdottir, A. D.; Olovsson, G.; Ramamurthy, V.; Scheffer, J. R.; Trotter, J. "An Ionic Heavy-Atom Effect in the Solid State Photochemistry of a b,g-Unsaturated Ketone," J. Am. Chem. Soc. 1994,116, 10322-10323.

(121) Pokkuluri, P. R.; Scheffer, J. R.; Trotter, J. "Isopropyl hydrogen 9,10-dihydro-9,10-ethenoanthracene-11,12-dicarboxylate," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1994, C50, 922-924.

(122) Fu, T. Y.; Scheffer, J. R.; Trotter, J. "A new mechanism for the photocleavage of monothioimides," Tetrahedron Lett. 1994,35, 3235-3238.

(123) Pokkuluri, P. R.; Scheffer, J. R.; Trotter, J. "The photolysis product of dimethyl 9,10-diphenyl-1,4-dihydro-1,4-ethenoanthracene-11,12-dicarboxylate," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1994, C50, 581-583.

(124) Fu, T. Y.; Liu, Z.; Scheffer, J. R.; Trotter, J. "The synthesis of anthraphos, a conformationally rigid, C2-symmetric diphosphine and the x-ray crystal structure of [Rh(COD)(anthraphos)]BF4," Tetrahedron Lett. 1994, 35, 7593-7596.

(125) Lewis, T. J.; Rettig, S. J.; Scheffer, J. R.; Trotter, J. "3,3,18,18-Tetramethyl-1,5,16,20-tetraoxadispiro[5.8.5.8]octacosane," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1995, C51, 2688-2690.

(126) Ito, Y.; Borecka, B.; Trotter, M.; Scheffer, J. R. "Control of solid-state photodimerization of trans-cinnamic acid by double salt formation with diamines," Tetrahedron Lett. 1995, 36, 6083-6086.

(127) Ito, Y.; Borecka, B.; Olovsson, G.; Trotter, J.; Scheffer, J. R. "Control of the solid-state photodimerization of some derivatives and analogs of trans-cinnamic acid by ethylenediamine," Tetrahedron Lett. 1995, 36, 6087-6090.

(128) Jones, R.; Liu, Z.; Scheffer, J. R.; Trotter, J. "Crystal structures and photochemistry of triphenylphosphine oxide complexes of ethyl hydrogen 9,10-dihydro-9,10-ethenoanthracene-11,12-dicarboxylate," Acta Crystallogr., Sect. B: Struct. Sci. 1995, B51, 888-892.

(129) Rettig, S. J.; Scheffer, J. R.; Trotter, J.; Yang, J. "Dimethyl 1-chloro-4b,8b,8c,8d-tetrahydrodibenzo[a,f]cyclopropa[cd]pentalene-8c,8d-dicarboxylate,"Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1995, C51, 2690-2691.

(130) Jones, R.; Graham, A.; Rattray, M.; Scheffer, J. R.; Trotter, J. "Dimethyl 4b,8b,8c,8d-tetrahydrodibenzo[a,f]cyclopropa[cd]pentalene-8b-carboxylate -8c-thionocarboxylate and the corresponding 8c-thiolocarboxylate," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1995, C51, 2691-2694.

(131) Fu, T. Y.; Olovsson, G.; Scheffer, J. R.; Trotter, J. "Modification of host photobehavior by formation of crystalline host-guest assemblies," Tetrahedron Lett. 1995, 36, 4353-4356.

(132) Fu, T. Y.; Gamlin, J. N.; Olovsson, G.; Scheffer, J. R.; Trotter, J.; Young, D. T. "The novel photochemical behavior of triptycene-1,4-quinone," Tetrahedron Lett. 1995, 36, 2025-2028.

(133) Rettig, S. J.; Scheffer, J. R.; Trotter, J.; Yang, J. "Photochemistry of dimethyl 1,8-dichloro-9,10-dihydro-9,10-ethenoanthracene-11,12-dicarboxylate," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1995, C51, 2685-2687.

(134) Rettig, S.; Scheffer, J. R.; Trotter, J.; Yang, J. "Tricyclo[22.2.2.211,14]triaconta-11,13,24,26,27,29-hexaene-6,19-dione,"Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1995, C51, 2687-2688.

(135) Fu, T. Y.; Scheffer, J. R.; Trotter, J. "(+)-(4bR,8bR,8cR,8dR)-Tetrahydrodibenzo[a,f]cyclopropa[cd]pentalene-8b,8c-bis(diphenylphosphine),"Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1996, C52, 2095-2097.

(136) Fu, T. Y.; Olovsson, G.; Scheffer, J. R.; Trotter, J. "9,10,12,14-Tetrahydro-12,12,14,14-tetraphenyl-9,10[3',4']furanoanthracene,"Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1996, C52, 2347-2349.

(137) Leibovitch, M.; Olovsson, G.; Sundarababu, G.; Ramamurthy, V.; Scheffer, J. R.; Trotter, J. "Asymmetric Induction in Photochemical Reactions Conducted in Zeolites and in the Crystalline State," J. Am. Chem. Soc. 1996, 118, 1219-1220.

(138) Gamlin, J. N.; Olovsson, G.; Pitchumani, K.; Ramamurthy, V.; Scheffer, J. R.; Trotter, J. "Cation to anion triplet-triplet energy transfer in crystalline organic salts," Tetrahedron Lett. 1996,37, 6037-6040.

(139) Fu, T. Y.; Scheffer, J. R.; Trotter, J. "Crystal structure-reactivity relationships in the solid state photochemistry of 2,4,6-triisopropylthiobenzophenone: C=O...H versus C=S...H abstraction geometry," Tetrahedron Lett. 1996, 37, 2125-2128.

(140) Gudmundsdottir, A. D.; Lewis, T. J.; Randall, L. H.; Scheffer, J. R.; Rettig, S. J.; Trotter, J.; Wu, C.-H. "Geometric Requirements for Hydrogen Abstractability and 1,4-Biradical Reactivity in the Norrish/Yang Type II Reaction: Studies Based on the Solid State Photochemistry and X-ray Crystallography of Medium-Sized Ring and Macrocyclic Diketones," J. Am. Chem. Soc. 1996, 118, 6167-6184.

(141) Gamlin, J. N.; Jones, R.; Leibovitch, M.; Patrick, B.; Scheffer, J. R.; Trotter, J. "The Ionic Auxiliary Concept in Solid State Organic Photochemistry," Acc. Chem. Res. 1996, 29, 203-209.

(142) Scheffer, J. R. "The ionic auxiliary concept in the supramolecular photo-chemistry of crystalline organic salts," Book of Abstracts, 211th ACS National Meeting, New Orleans, LA, March 24-28 1996, ORGN-026.

(143) Lewis, T. J.; Rettig, S. J.; Sauers, R. R.; Scheffer, J. R.; Trotter, J.; Wu, C.-H. "On the conformational analysis of photochemical reactivity of 1,6-cyclodecanedione," Molecular Crystals and Liquid Crystals Science and Technology, Section A: Molecular Crystals and Liquid Crystals 1996, 277, 649-658.

(144) Jones, R.; Rettig, S. J.; Scheffer, J. R.; Trotter, J.; Yang, J. "Structures and photochemistry of 1,5-disubstituted dibenzobarrelenes," Acta Crystallogr., Sect. B: Struct. Sci. 1996, B52, 151-158.

(145) Jones, R.; Rattray, A. G. M.; Rettig, S. J.; Scheffer, J. R.; Trotter, J. "Structures and photochemistry of dibenzobarrelene monoamides," Acta Crystallogr., Sect. B: Struct. Sci. 1996,B52, 1007-1013.

(146) Pitchumani, K.; Gamlin, J. N.; Ramamurthy, V.; Scheffer, J. R. "Triplet-triplet energy transfer between organic molecules trapped in zeolites," Chemical Communications (Cambridge) 1996, 2049-2050.

(147) Borecka, B.; Gamlin, J. N.; Gudmundsdottir, A. D.; Olovsson, G.; Scheffer, J. R.; Trotter, J. "Unusual photorearrangements of 9,10-disubstituted triptycene-1,4-quinone derivatives," Tetrahedron Lett. 1996, 37, 2121-2124.

(148) Sundarababu, G.; Leibovitch, M.; Corbin, D. R.; Scheffer, J. R.; Ramamurthy, V. "Zeolite as a host for chiral induction," Chemical Communications (Cambridge) 1996, 2159-2160.

(149) Fu, T. Y.; Liu, Z.; Rettig, S. J.; Scheffer, J. R.; Trotter, J. "[(1,2,5,6-h)-1,5-Cyclooctadiene][(11R,12R)-9,10-dihydro-9,10-ethanoanthracene-11,12-bis(diphenylphosphine-P)]rhodium(I) tetrafluoroborate," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1997, C53, 1577-1579.

(150) Fu, T. Y.; Scheffer, J. R.; Trotter, J. "4-[2,4,6-Tris(1-methylethyl)benzoyl]benzoic acid (S)-(-)-proline," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1997, C53, 1259-1262.

(151) Leibovitch, M.; Olovsson, G.; Scheffer, J. R.; Trotter, J. "Absolute configuration correlation studies in solid state organic photochemistry," Journal of Information Recording 1997, 23, 411.

(152) Wu, L.-C.; Cheer, C. J.; Olovsson, G.; Scheffer, J. R.; Trotter, J.; Wang, S.-L.; Liao, F.-L. "Crystal engineering for absolute asymmetric synthesis through the use of meta-substituted aryl groups," Tetrahedron Lett. 1997, 38, 3135-3138.

(153) Leibovitch, M.; Olovsson, G.; Scheffer, J. R.; Trotter, J. "Determination of the Absolute Steric Course of an Enantioselective Single Crystal-to-Single Crystal Photorearrangement," J. Am. Chem. Soc. 1997, 119, 1462-1463.

(154) Jones, R.; Rattray, A. G. M.; Scheffer, J. R.; Trotter, J. "Dimethyl 9,10-dihydro-9,10-ethenoanthracene-11-carboxylate-12-S-carbonothioate," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1997, C53, 1162-1164.

(155) Jones, R.; Rattray, A. G. M.; Scheffer, J. R.; Trotter, J. "Methyl 8c-phenyl-4b,8b,8c,8d-tetrahydrodibenzo[a,f]cyclopropa[cd]pentalene-8b-carboxylate,"Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1997, C53, 1262-1263.

(156) Jones, R.; Rattray, A. G. M.; Scheffer, J. R.; Trotter, J. "N,N-diethyl-N'-methyl-4b,8b,8c,8d-tetrahydrodibenzo[a,f]cyclopropa[cd]pentalene-8b,8c-dicarboxamide,"Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1997, C53, 1263-1265.

(157) Olovsson, G.; Scheffer, J. R.; Trotter, J.; Wu, C.-H. "Novel differences between the solid state and solution phase photochemistry of 1,2-cyclodecanedione," Tetrahedron Lett. 1997, 38, 6549-6552.

(158) Fu, T. Y.; Scheffer, J. R.; Trotter, J. "Phenyl[2,4,6-tris(1-methylethyl)phenyl]methanethione and 4-methoxyphenyl[2,4,6-tris(1-methylethyl)phenyl]methanethione," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1997, C53, 1257-1259.

(159) Scheffer, J. R.; Ihmels, H. "Photochemistry of 11,12-bis(aminomethyl)-9,10-dihydro-9,10-ethenoanthracene in solution and in the solid state," Liebigs Annalen/Recueil 1997, 1925-1929.

(160) Fu, T. Y.; Scheffer, J. R.; Trotter, J. "Structures and photochemistry of inclusion compounds of 9,10-dihydro-9,10-ethenoanthracene-11,12-bis(diphenylmethanol)," Acta Crystallogr., Sect. B: Struct. Sci. 1997, B53, 300-305.

(161) Fu, T. Y.; Liu, Z.; Olovsson, G.; Scheffer, J. R.; Trotter, J. "Structures and photochemistry of inclusion compounds of 9,10-dihydro-9,10-ethenoanthracene-11,12-bis(diphenylphosphine oxide)," Acta Crystallogr., Sect. B: Struct. Sci. 1997, B53, 293-299.

(162) Fu, T. Y.; Leibovitch, M.; Scheffer, J. R.; Trotter, J. "(Z)-1-Benzoyl-4-tert-butyl-1-methylcyclohexane and (Z)-4-tert-butyl-1-methyl-1-thiobenzoylcyclohexane," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1997, C53, 1255-1256.

(163) Fu, T. Y.; Scheffer, J. R.; Trotter, J. "3-(4-Cyanophenyl)2,2-dimethyl-1-phenylpropane-1-thione," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1998, C54, 496-497.

(164) Joy, A.; Hamstead, S.; Leibovitch, M.; Scheffer, J. R.; Ramamurthy, V. "Asymmetric photoreactions within chirally modified zeolites," Book of Abstracts, 216th ACS National Meeting, Boston, August 23-27 1998, PHYS-316.

(165) Netherton, M. R.; Rademacher, K.; Scheffer, J. R. "Crystal to molecular chirality transfer in solid state organic photochemistry," Book of Abstracts, 216th ACS National Meeting, Boston, August 23-27 1998, COLL-261.

(166) Joy, A.; Ramamurthy, V.; Scheffer, J. R.; Corbin, D. R. "Enantioselective photoelectrocyclization within zeolites: tropolone methyl ether in chirally modified NaY," Chemical Communications (Cambridge) 1998, 1379-1380.

(167) Leibovitch, M.; Olovsson, G.; Scheffer, J. R.; Trotter, J. "An Investigation of the Yang Photocyclization Reaction in the Solid State: Asymmetric Induction Studies and Crystal Structure-Reactivity Relationships," J. Am. Chem. Soc. 1998, 120, 12755-12769.

(168) Mak, T. C. W.; Patric, B. O.; Rettig, S. J.; Scheffer, J. R.; Trotter, J.; Ukpabi, P.; Wu, B.-M.; Yee, V. C. "a-Naphthyl phenyl pinacols," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1998,C54, 1148-1151.

(169) Mak, T. C. W.; Patrick, B. O.; Rettig, S. J.; Scheffer, J. R.; Trotter, J.; Ukpabi, P.; Wu, B.-M.; Yee, V. C. "a-Naphthyl phenyl pinacols. [Erratum to document cited in CA129:252696]," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1998, C54, 1728.

(170) Pitchumani, K.; Warrier, M.; Ramamurthy, V.; Scheffer, J. R. "Novel approaches towards the generation of excited triplets of organic guest molecules with zeolites," Chemical Communications (Cambridge) 1998, 1197-1198.

(171) Fu, T. Y.; Scheffer, J. R.; Trotter, J. "N-Phenyl-N-(phenylthhioxomethyl)benzamide," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1998, C54, 562.

(172) Fu, T. Y.; Scheffer, J. R.; Trotter, J. "N-Phenyl-N-(phenylthioxomethyl)benzamide," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1998, C54, 101-102.

(173) Fu, T. Y.; Gamlin, J. N.; Olovsson, G.; Scheffer, J. R.; Trotter, J.; Young, D. T. "Photochemistry of triptycene-1,4-quinone," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1998, C54, 116-119.

(174) Fu, T. Y.; Scheffer, J. R.; Trotter, J. "Photocleavage reactions of monothioimides," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1998, C54, 103-107.

(175) Borecka-Bednarz, B.; Bree, A. V.; Patrick, B. O.; Scheffer, J. R.; Trotter, J. "Second-harmonic generation studies of chiral organic salts," Can. J. Chem. 1998, 76, 1616-1632.

(176) Fu, T. Y.; Scheffer, J. R.; Trotter, J.; Yang, J. "Structure and photochemistry of four adamantylacetophenones," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 1998, C54, 491-496.

(177) Ihmels, H.; Patrick, B. O.; Scheffer, J. R.; Trotter, J. "11,12-Bis[(diethylamino)methyl]-9,10-dihydro-9,10-ethenoanthracene: a probe for the heavy atom effect in solid state photoreactions," Tetrahedron 1999,55, 2171-2182.

(178) Cheung, E.; Rademacher, K.; Scheffer, J. R.; Trotter, J. "Asymmetric induction in the solid state photochemistry of an a-mesitylacetophenone derivative through the use of ionic chiral auxiliaries," Tetrahedron Lett. 1999, 40, 8733-8736.

(179) Garcia-Garibay, M. A.; Houk, K. N.; Keating, A. E.; Cheer, C. J.; Leibovitch, M.; Scheffer, J. R.; Wu, L.-C. "Computational Prediction of the Enantioselectivity of a Solid-State Photoreaction," Organic Letters 1999, 1, 1279-1281.

(180) Cheung, E.; Netherton, M. R.; Scheffer, J. R.; Trotter, J. "In the Footsteps of Pasteur: Asymmetric Induction in the Solid-State Photochemistry of Ammonium Carboxylate Salts," J. Am. Chem. Soc. 1999,121, 2919-2920.

(181) Cheung, E.; Kang, T.; Raymond, J. R.; Scheffer, J. R.; Trotter, J. "An ionic chiral auxiliary-induced regioselective and enantioselective Yang photocyclization reaction in the crystalline state," Tetrahedron Lett. 1999, 40, 8729-8732.

(182) Cheung, E.; Netherton, M. R.; Scheffer, J. R.; Trotter, J. "Linearly conjugated benzocyclohexadienone photochemistry in the solid state: ionic chiral auxiliary mediated asymmetric induction," Tetrahedron Lett. 1999, 40, 8737-8740.

(183) Ihmels, H.; Scheffer, J. R. "The Norrish type II reaction in the crystalline state: toward a better understanding of the geometric requirements for g-hydrogen atom abstraction," Tetrahedron 1999,55, 885-907.

(184) Janz, K. M.; Scheffer, J. R. "The use of ionic chiral sensitizers in the crystalline state: application to the di-p-methane photorearrangement of a benzonorbornadiene derivative," Tetrahedron Lett. 1999, 40, 8725-8728.

(185) Cheung, E.; Netherton, M. R.; Scheffer, J. R.; Trotter, J.; Zenova, A. "Asymmetric induction through the use of remote covalent and ionic chiral auxiliaries in the solid-state photochemistry of 2-benzoyladamantane-2-carboxylic acid derivatives," Tetrahedron Lett. 2000, 41, 9673-9677.

(186) Joy, A.; Scheffer, J. R.; Ramamurthy, V. "Chirally Modified Zeolites as Reaction Media: Photochemistry of an Achiral Tropolone Ether," Organic Letters 2000, 2, 119-121.

(187) Scheffer, J. R.; Netherton, M. R.; Cheung, E.; Trotter, J. "Competition between cyclization, cleavage, and reverse hydrogen transfer in 1,4-hydroxybiradicals: Crystal structure/solid-state reactivity correlations," Book of Abstracts, 219th ACS National Meeting, San Francisco, CA, March 26-30, 2000 2000, ORGN-857.

(188) Cheung, E.; Netherton, M. R.; Scheffer, J. R.; Trotter, J. "Competition between Cyclization, Cleavage, and Reverse Hydrogen Transfer in 1,4-Hydroxybiradicals: Crystal Structure-Solid State Reactivity Correlations," Organic Letters 2000, 2, 77-80.

(189) Cheung, E.; Kang, T.; Netherton, M. R.; Scheffer, J. R.; Trotter, J. "Conformational Enantiomerism in Chiral Organic Salts Containing Crystallographically Independent Anion-Cation Pairs," J. Am. Chem. Soc. 2000, 122, 11753-11754.

(190) Cheung, E.; Chong, K. C. W.; Jayaraman, S.; Ramamurthy, V.; Scheffer, J. R.; Trotter, J. "Enantio- and Diastereodifferentiating cis,trans-Photoisomerization of 2b,3b-Diphenylcyclopropane-1a-carboxylic Acid Derivatives in Organized Media," Organic Letters 2000, 2, 2801-2804.

(191) Scheffer, J. R.; Wang, L. "Enantioselective photoelectrocyclization of a tropolone derivative in the crystalline state," J. Phys. Org. Chem. 2000, 13, 531-538.

(192) Jayaraman, S.; Uppili, S.; Natarajan, A.; Joy, A.; Chong, K. C. W.; Netherton, M. R.; Zenova, A.; Scheffer, J. R.; Ramamurthy, V. "The influence of chiral auxiliaries is enhanced within zeolites," Tetrahedron Lett. 2000, 41, 8231-8235.

(193) Cheung, E.; Rademacher, K.; Scheffer, J. R.; Trotter, J. "An Investigation of the Solid-State Photochemistry of a-Mesitylacetophenone Derivatives: Asymmetric Induction Studies and Crystal Structure-Reactivity Relationships," Tetrahedron 2000,56, 6739-6751.

(194) Cheung, E.; Kang, T.; Scheffer, J. R.; Trotter, J. "Latent chemical behavior revealed in the crystalline state: novel photochemistry of a cis-9-decalyl aryl ketone," Chemical Communications (Cambridge) 2000, 2309-2310.

(195) Joy, A.; Uppili, S.; Netherton, M. R.; Scheffer, J. R.; Ramamurthy, V. "Photochemistry of a Tropolone Ether and 2,2-Dimethyl-1-(2H)-naphthalenones within a Zeolite: Enhanced Diastereoselectivity via Confinement," J. Am. Chem. Soc. 2000,122, 728-729.

(196) Scheffer, J. R. "2000 Alfred Bader Award Lecture. In the footsteps of Pasteur: asymmetric induction in the photochemistry of crystalline ammonium carboxylate salts," Can. J. Chem. 2001,79, 349-357.

(197) Scheffer, J. R.; Wang, K. "Enantioselective photochemical synthesis of a b-lactam via the solid state ionic chiral auxiliary method," Synthesis 2001, 1253-1257.

(198) Scheffer, J. R.; Scott, C. "Perspectives: Solid state organic chemistry: Stepping it up," Science (Washington, DC, United States) 2001,291, 1712-1713.

(199) Kang, T.; Scheffer, J. R. "An Unexpected Paterno-Buechi Reaction in the Crystalline State," Organic Letters 2001, 3, 3361-3364.

(200) Zolotoy, A. B.; Botoshansky, M.; Kaftory, M.; Scheffer, J. R.; Yang, J. "1-Methyl-5,6-diphenylpyrazine-2(1H)-thione," Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 2002, C58, o220-o222.

(201) Sivaguru, J.; Scheffer, J. R.; Chandarasekhar, J.; Ramamurthy, V. "Confined space and cations enhance the power of a chiral auxiliary: photochemistry of 1,2-diphenylcyclopropane derivatives," Chemical Communications (Cambridge, United Kingdom) 2002, 830-831.

(202) Natarajan, A.; Wang, K.; Ramamurthy, V.; Scheffer, J. R.; Patrick, B. "Control of Enantioselectivity in the Photochemical Conversion of a-Oxoamides into b-Lactam Derivatives," Organic Letters 2002, 4, 1443-1446.

(203) Natarajan, A.; Joy, A.; Kaanumalle, L. S.; Scheffer, J. R.; Ramamurthy, V. "Enhanced Enantio- and Diastereoselectivity via Confinement and Cation Binding: Yang Photocyclization of 2-Benzoyladamantane Derivatives within Zeolites," J. Org. Chem. 2002,67, 8339-8350.

(204) Vishnumurthy, K.; Cheung, E.; Scheffer, J. R.; Scott, C. "Enhanced Regioselectivity of Yang Photocyclization in the Crystalline State," Organic Letters 2002, 4, 1071-1074.

(205) Chong, K. C. W.; Sivaguru, J.; Shichi, T.; Yoshimi, Y.; Ramamurthy, V.; Scheffer, J. R. "Use of Chirally Modified Zeolites and Crystals in Photochemical Asymmetric Synthesis," J. Am. Chem. Soc. 2002,124, 2858-2859.

(206) Chong, K. C. W.; Scheffer, J. R. "Thermal and Photochemical Transformation of Conformational Chirality into Configurational Chiality in the Crystalline State," J. Am. Chem. Soc. 2003,125, 4040-4041.

Last updated 17 June 2003