@article {1637,
	title = {Engineering acyclic alkyl aryl ketones for enantioselective Norrish/Yang type II photochemistry in the crystalline state},
	journal = {Crystengcomm},
	volume = {8},
	number = {5},
	year = {2006},
	note = {ISI Document Delivery No.: 050IUTimes Cited: 8Cited Reference Count: 9},
	pages = {388-390},
	type = {Article},
	abstract = {While most alkyl aryl ketones fail to undergo the Norrish/Yang type II photoreaction in the solid state because they crystallize in conformations unfavorable for gamma-hydrogen atom abstraction, it was found with the aid of molecular mechanics that such is not the case for the 2-ethyl-1-arylbutan-1-one system; subsequent application of the solid state ionic chiral auxiliary method of asymmetric synthesis to derivatives of this ketone afforded the corresponding Yang cyclobutanol in enantiomeric excesses as high as 92\% at 91\% conversion.},
	keywords = {ASYMMETRIC INDUCTION, REACTIVITY, SOLID-STATE},
	isbn = {1466-8033},
	url = {<Go to ISI>://000238081700006},
	author = {Xia, W. J. and Yang, C. and Scheffer, J. R. and Patrick, B. O.}
}
@article {1610,
	title = {Monitoring reaction centers and molecules during an enantioselective photoreaction in a crystal},
	journal = {Crystengcomm},
	volume = {8},
	number = {8},
	year = {2006},
	note = {ISI Document Delivery No.: 071LZTimes Cited: 9Cited Reference Count: 19Turowska-Tyrk, Ilona Bakowicz, Julia Scheffer, John R. Xia, Wujiong},
	pages = {616-621},
	type = {Article},
	abstract = {The single crystal-to-single crystal retro-Claisen photorearrangement of the salt of 7-(4-carboxybenzoyl) norbornene with (S)-(2)-1-cyclohexylethylamine was studied. Although this reaction is an ionic chiral auxiliary-mediated asymmetric synthesis, which normally affords highly enantio-enriched products, the enantiomeric excess in this case is a relatively low 60\% (80\% of one enantiomer, 20\% of the other). X-ray structure analysis was used in order to describe changes in the reaction centers and the behavior of molecules during the photoreaction and to understand the formation of two enantiomers. It was discovered that the conformation of the reactant molecules changes during the photoreaction to one that enables the formation of the minor enantiomer. This was seen clearly at ca. 30\% reaction progress. The variations in the cell constants as a function of reaction progress are also presented. The structural changes taking place during the retro-Claisen photorearrangement are compared to the changes observed for other intra- and intermolecular photoreactions in crystals.},
	keywords = {2-BENZYL-5-BENZYLIDENECYCLOPENTANONE, ASYMMETRIC INDUCTION, PHOTODIMERIZATION, SOLID-STATE, STRUCTURAL TRANSFORMATIONS, Yang photocyclization},
	isbn = {1466-8033},
	url = {<Go to ISI>://000239605000007},
	author = {Turowska-Tyrk, I. and Bakowicz, J. and Scheffer, J. R. and Xia, W. J.}
}
@article {1359,
	title = {Structure-reactivity correlations for solid-state enantioselective photochemical reactions established directly from powder X-ray diffraction},
	journal = {Journal of the American Chemical Society},
	volume = {128},
	number = {49},
	year = {2006},
	note = {ISI Document Delivery No.: 113CMTimes Cited: 5Cited Reference Count: 29Cheung, Eugene Y. Harris, Kenneth D. M. Kang, Ting Scheffer, John R. Trotter, James},
	month = {Dec},
	pages = {15554-15555},
	type = {Article},
	keywords = {ASYMMETRIC INDUCTION, CHEMISTRY, CRYSTALLINE STATE, GENETIC ALGORITHM, ORGANIC-PHOTOCHEMISTRY, SALTS},
	isbn = {0002-7863},
	url = {<Go to ISI>://000242575300003},
	author = {Cheung, E. Y. and Harris, K. D. M. and Kang, T. and Scheffer, J. R. and Trotter, J.}
}
@article {1359,
	title = {Structure-reactivity correlations for solid-state enantioselective photochemical reactions established directly from powder X-ray diffraction},
	journal = {Journal of the American Chemical Society},
	volume = {128},
	number = {49},
	year = {2006},
	note = {ISI Document Delivery No.: 113CMTimes Cited: 5Cited Reference Count: 29Cheung, Eugene Y. Harris, Kenneth D. M. Kang, Ting Scheffer, John R. Trotter, James},
	month = {Dec},
	pages = {15554-15555},
	type = {Article},
	keywords = {ASYMMETRIC INDUCTION, CHEMISTRY, CRYSTALLINE STATE, GENETIC ALGORITHM, ORGANIC-PHOTOCHEMISTRY, SALTS},
	isbn = {0002-7863},
	url = {<Go to ISI>://000242575300003},
	author = {Cheung, E. Y. and Harris, K. D. M. and Kang, T. and Scheffer, J. R. and Trotter, J.}
}
@inbook {1243,
	title = {Asymmetric induction in organic photochemistry via the solid-state ionic chiral auxiliary approach},
	booktitle = {Organic Solid State Reactions},
	series = {Topics in Current Chemistry},
	volume = {254},
	year = {2005},
	note = {ISI Document Delivery No.: BCP68Times Cited: 29Cited Reference Count: 57ReviewHEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY},
	pages = {233-262},
	publisher = {Springer-Verlag Berlin},
	organization = {Springer-Verlag Berlin},
	address = {Berlin},
	abstract = {After a brief introduction and summary of various methods of asymmetric induction in organic photochemistry, the main part of the review covers the solid-state ionic chiral auxiliary approach to asymmetric photochemical synthesis. Application of this technique to the Norrish type II reaction, as well as to the di-Ti-methane and oxa-di-pi-methane photorearrangements, and the Cis, trans-photoisomerization of diarylcyclopropane derivatives is presented and discussed.},
	keywords = {ABSOLUTE-CONFIGURATION, ACHIRAL, AMMONIUM CARBOXYLATE SALTS, ASYMMETRIC INDUCTION, auxiliaries, crystal structure-reactivity correlations, CRYSTALLINE STATE, di-pi-methane, ionic chiral, MODIFIED ZEOLITES, MOLECULES, organic photochemistry, PHOTOCYCLIZATION, SINGLE-CRYSTALS, solid state, STRUCTURE-REACTIVITY RELATIONSHIPS, TROPOLONE ETHER},
	isbn = {0340-1022},
	url = {<Go to ISI>://000230596800007},
	author = {Scheffer, J. R. and Xia, W. J.}
}
@article {1064,
	title = {Molecular mechanics-assisted crystal engineering of solid state photoreactions: application to the Yang photocyclization of alpha-1-norbornylacetophenone derivatives},
	journal = {Tetrahedron Letters},
	volume = {46},
	number = {7},
	year = {2005},
	note = {ISI Document Delivery No.: 895FRTimes Cited: 3Cited Reference Count: 11},
	month = {Feb},
	pages = {1141-1144},
	type = {Article},
	abstract = {Based on molecular mechanics, Yang photocyclization of alpha-1-norbornylacetophenone derivatives in the crystalline state was engineered through methylation adjacent to the carbonyl group, thus changing the conformation in the crystal and leading to enhanced diastereo- and enantioselectivity. (C) 2004 Elsevier Ltd. All rights reserved.},
	keywords = {ASYMMETRIC INDUCTION, crystal engineering, GEOMETRIC REQUIREMENTS, II REACTION, ionic chiral auxiliaries, REACTIVITY, solid state photochemistry, X-RAY CRYSTALLOGRAPHY, Yang photocyclization},
	isbn = {0040-4039},
	url = {<Go to ISI>://000226846800021},
	author = {Botoshansky, M. and Braga, D. and Kaftory, M. and Maini, L. and Patrick, B. O. and Scheffer, J. R. and Wang, K. Y.}
}
@article {1306,
	title = {Orbital-overlap control of the reactivity of a bicyclic 1-hydroxy-1,4-biradical},
	journal = {Angewandte Chemie-International Edition},
	volume = {44},
	number = {32},
	year = {2005},
	note = {ISI Document Delivery No.: 957JYTimes Cited: 13Cited Reference Count: 23},
	pages = {5087-5089},
	type = {Article},
	keywords = {4-BIRADICALS, ASYMMETRIC INDUCTION, asymmetric synthesis, CHIRAL AUXILIARY APPROACH, CONFORMATIONAL MEMORY, ORGANIC-PHOTOCHEMISTRY, PHOTOCHEMICAL-SYNTHESIS, PHOTOCHEMISTRY, radicals, solid-state reactions, STATE REACTIVITY, STEREOSELECTIVITY, structure-activity relationships, TRIPLET 1},
	isbn = {1433-7851},
	url = {<Go to ISI>://000231367300019},
	author = {Yang, C. and Xia, W. J. and Scheffer, J. R. and Botoshansky, M. and Kaftory, M.}
}
@article {727,
	title = {The photochemistry of trans-1,4,4,4-tetraphenylbut-2-en-1-one: A highly efficient aryl migration (type B) enone photorearrangement},
	journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie},
	volume = {81},
	number = {6},
	year = {2003},
	note = {ISI Document Delivery No.: 706UATimes Cited: 0Cited Reference Count: 18},
	month = {Jun},
	pages = {705-708},
	type = {Article},
	abstract = {Photolysis of trans-1,4,4,4-tetraphenylbut-2-en-1-one (3) in acetonitrile or benzene leads to trans-cis isomerization (7) along with rearrangement to trans-1 -benzoyl-2,2,3-triphenylcyclopropane(8). Formation of the latter product represents a new example of the aryl migration (type B) enone photorearrangement reaction first reported by Zimmerman and co-workers for 4,4-diphenylcyclohex-2-en-1-one (1). The quantum yield in the case of enone 3 (0.4) is approximately 10 times greater than that for 4,4,-diphenylcyclohex-2-en-1-one, a result that is ascribed to steric acceleration of phenyl migration from the triphenylmethyl group plus greater resonance stabilization of the intermediate biradical.},
	keywords = {aryl migration, ASYMMETRIC INDUCTION, di-pi-methane, enone, EXPLORATORY ORGANIC PHOTOCHEMISTRY, MECHANISM, MIGRATION, PHENYL, PHOTOCHEMISTRY, PHOTOCYCLIZATION, REARRANGEMENT, STATE},
	isbn = {0008-4042},
	url = {<Go to ISI>://000184472400035},
	author = {Scheffer, J. R. and Vishnumurthy, K.}
}
@article {592,
	title = {Thermal and photochemical transformation of conformational chirality into configurational chirality in the crystalline state},
	journal = {Journal of the American Chemical Society},
	volume = {125},
	number = {14},
	year = {2003},
	note = {ISI Document Delivery No.: 663JYTimes Cited: 15Cited Reference Count: 12},
	month = {Apr},
	pages = {4040-4041},
	type = {Article},
	keywords = {ASYMMETRIC INDUCTION, SOLID-STATE},
	isbn = {0002-7863},
	url = {<Go to ISI>://000182003500017},
	author = {Chong, K. C. W. and Scheffer, J. R.}
}
@article {459,
	title = {Control of enantioselectivity in the photochemical conversion of alpha-oxoamides into beta-lactam derivatives},
	journal = {Organic Letters},
	volume = {4},
	number = {9},
	year = {2002},
	note = {ISI Document Delivery No.: 545XYTimes Cited: 19Cited Reference Count: 34},
	month = {May},
	pages = {1443-1446},
	type = {Article},
	abstract = {[GRAPHIC] Several approaches to asymmetric induction in the alpha-oxoamide (1) to beta-lactam (2) photorearrangement are described. Best results are obtained via irradiation of ionic and covalent chiral auxiliary-containing reactants in the crystalline state and in the interior supercages of zeolites.},
	keywords = {AMINO-ACID, ASYMMETRIC INDUCTION, CATION-PI INTERACTIONS, CRYSTALLINE STATE, GAS-PHASE, GEOMETRIC REQUIREMENTS, II, PHOTOCYCLIZATION, REACTIONS, SOLID-STATE PHOTOCHEMISTRY, ZWITTERIONS},
	isbn = {1523-7060},
	url = {<Go to ISI>://000175243900009},
	author = {Natarajan, A. and Wang, K. and Ramamurthy, V. and Scheffer, J. R. and Patrick, B.}
}
@article {5101,
	title = {An unexpected Paterno-Buchi reaction in the crystalline state},
	journal = {Organic Letters},
	volume = {3},
	number = {21},
	year = {2001},
	note = {ISI Document Delivery No.: 484UMTimes Cited: 6Cited Reference Count: 43},
	month = {Oct},
	pages = {3361-3364},
	type = {Article},
	abstract = {[GRAPHICS] The solution and solid-state photochemistry of a series of aryl 1-phenylcyclopentyl ketones (1) was investigated. While typical Norrish type I products were formed in solution, irradiation of crystals of I afforded the novel oxetanes 3 and 4 regiospecifically. The formation of the oxetanes is believed to occur through Norrish type I cleavage and hydrogen abstraction, producing an alkene and an aldehyde, followed by a Paternb-BUchi reaction within the crystal lattice cage.},
	keywords = {ASYMMETRIC INDUCTION, ORGANIC-PHOTOCHEMISTRY, PHOTOCYCLOADDITION, SALTS, SOLID-STATE, YANG PHOTOCYCLIZATION REACTION},
	isbn = {1523-7060},
	url = {<Go to ISI>://000171708000034},
	author = {Kang, T. and Scheffer, J. R.}
}
@article {4923,
	title = {Enantioselective photoelectrocyclization of a tropolone derivative in the crystalline state},
	journal = {Journal of Physical Organic Chemistry},
	volume = {13},
	number = {9},
	year = {2000},
	note = {ISI Document Delivery No.: 349GNTimes Cited: 5Cited Reference Count: 15},
	month = {Sep},
	pages = {531-538},
	type = {Article},
	abstract = {Achiral tropolone ethers are well known to undergo photochemically induced disrotatory electrocyclic ring closure in solution to form racemic bicyclo[3.2.0]hepta-3,6-dien-2-one derivatives. The present paper reports successful efforts to carry out this transformation enantioselectively through the use of the solid-state ionic chiral auxiliary method. in this method, the reactant, an achiral tropolone ether, is equipped with a carboxylic acid group to which an optically pure amine can be attached by salt formation. Salts such as these are required to crystallize in chiral space groups, which provide asymmetric reaction cavities capable of differentiating enantiomeric transition states. Irradiation of these materials in the solid state leads to enantiomerically enriched products in moderate to high enantiomeric excess depending on the amine employed. Of the amines studied, the best results were obtained with 1-phenylethylamine and 1-amido-2-indanol, which gave enantiomeric excesses in the 60-80\% range depending on the extent of conversion. Because the tropolone ring is planar, it is suggested that the stereochemical outcome of the electrocyclization in the solid state is governed by environmental crystal lattice effects rather than by the initial conformation of the reactant. Copyright (C) 2000 John Wiley \& Sons, Ltd.},
	keywords = {ALKYL ETHERS, ASYMMETRIC INDUCTION, crystalline tropolones, electrocyclic ring closure, enantioselective photoelectrocyclization, PHOTOCHEMISTRY, PHOTOREACTIONS, SOLID-STATE, YANG PHOTOCYCLIZATION REACTION},
	isbn = {0894-3230},
	url = {<Go to ISI>://000089037500007},
	author = {Scheffer, J. R. and Wang, L. T.}
}
@article {4766,
	title = {An investigation of the solid-state photochemistry of alpha-mesitylacetophenone derivatives: Asymmetric induction studies and crystal structure-reactivity relationships},
	journal = {Tetrahedron},
	volume = {56},
	number = {36},
	year = {2000},
	note = {ISI Document Delivery No.: 351GHTimes Cited: 10Cited Reference Count: 24},
	month = {Sep},
	pages = {6739-6751},
	type = {Article},
	abstract = {The photochemical conversion of a series of alpha-mesitylacetophenone derivatives into 2-indanols via delta-hydrogen abstraction has been investigated in the solid state. A correlation between solid-state reactivity and crystal structure has been established for this type of reaction. For the seven compounds whose crystal structures were determined, the average value of d (C=O...H distance) and L (C=O...CH3 distance) were 2.77+/-0.04 Angstrom and 3.42+/-0.06 Angstrom, and the value of omega (delta-H out of plane angle), d (C=O...H angle) and a (C-H...O angle) were 59+/-2 degrees, 80+/-7 degrees and 123+/-3 degrees, respectively. These parameters depended mainly on the magnitude of the deviation of the carbonyl group from the fully bisecting position over the mesityl ring, which ranged from 9-14 degrees in the case of in the solid state reactive ketones and approached 0 degrees for the unreactive compounds. Asymmetric induction studies were carried out by providing the reactants with carboxylic acid substituents to which ionic chiral auxiliaries were attached through salt formation with optically active amines. Irradiation of the salts (13 in total) in the crystalline state gave enantiomeric excesses of up to 90\%. The crystal structures of three of the salts were determined and on this basis, the reasons for the selectivity in the crystalline state are discussed. (C) 2000 Elsevier Science Ltd. All rights reserved.},
	keywords = {ABSTRACTION, ASYMMETRIC INDUCTION, CARBOXYLATE SALTS, CYCLIZATION, PHOTOCHEMISTRY, TRIPLETS, YANG PHOTOCYCLIZATION REACTION},
	isbn = {0040-4020},
	url = {<Go to ISI>://000089149100018},
	author = {Cheung, E. and Rademacher, K. and Scheffer, J. R. and Trotter, J.}
}
@article {4766,
	title = {An investigation of the solid-state photochemistry of alpha-mesitylacetophenone derivatives: Asymmetric induction studies and crystal structure-reactivity relationships},
	journal = {Tetrahedron},
	volume = {56},
	number = {36},
	year = {2000},
	note = {ISI Document Delivery No.: 351GHTimes Cited: 10Cited Reference Count: 24},
	month = {Sep},
	pages = {6739-6751},
	type = {Article},
	abstract = {The photochemical conversion of a series of alpha-mesitylacetophenone derivatives into 2-indanols via delta-hydrogen abstraction has been investigated in the solid state. A correlation between solid-state reactivity and crystal structure has been established for this type of reaction. For the seven compounds whose crystal structures were determined, the average value of d (C=O...H distance) and L (C=O...CH3 distance) were 2.77+/-0.04 Angstrom and 3.42+/-0.06 Angstrom, and the value of omega (delta-H out of plane angle), d (C=O...H angle) and a (C-H...O angle) were 59+/-2 degrees, 80+/-7 degrees and 123+/-3 degrees, respectively. These parameters depended mainly on the magnitude of the deviation of the carbonyl group from the fully bisecting position over the mesityl ring, which ranged from 9-14 degrees in the case of in the solid state reactive ketones and approached 0 degrees for the unreactive compounds. Asymmetric induction studies were carried out by providing the reactants with carboxylic acid substituents to which ionic chiral auxiliaries were attached through salt formation with optically active amines. Irradiation of the salts (13 in total) in the crystalline state gave enantiomeric excesses of up to 90\%. The crystal structures of three of the salts were determined and on this basis, the reasons for the selectivity in the crystalline state are discussed. (C) 2000 Elsevier Science Ltd. All rights reserved.},
	keywords = {ABSTRACTION, ASYMMETRIC INDUCTION, CARBOXYLATE SALTS, CYCLIZATION, PHOTOCHEMISTRY, TRIPLETS, YANG PHOTOCYCLIZATION REACTION},
	isbn = {0040-4020},
	url = {<Go to ISI>://000089149100018},
	author = {Cheung, E. and Rademacher, K. and Scheffer, J. R. and Trotter, J.}
}
@article {4508,
	title = {Asymmetric induction in the solid state photochemistry of an alpha-mesitylacetophenone derivative through the use of ionic chiral auxiliaries},
	journal = {Tetrahedron Letters},
	volume = {40},
	number = {50},
	year = {1999},
	note = {ISI Document Delivery No.: 258FJTimes Cited: 15Cited Reference Count: 8},
	month = {Dec},
	pages = {8733-8736},
	type = {Article},
	abstract = {Irradiation in the crystalline state of salts formed between alpha-mesitylacetophenone-p-carboxylic acid and a variety of optically pure amines - the so-called {\textquoteright}ionic chiral auxiliary{\textquoteright} approach to asymmetric synthesis - leads to the corresponding 2-indanol in excellent yield and in high enantiomeric excess. X-Ray crystallography reveals the source of the enantioselectivity. (C) 1999 Elsevier Science Ltd. All rights reserved.},
	keywords = {ASYMMETRIC INDUCTION, CARBOXYLATE, CRYSTAL, KETONES, PHOTOCHEMISTRY, REARRANGEMENTS},
	isbn = {0040-4039},
	url = {<Go to ISI>://000083827200004},
	author = {Cheung, E. and Rademacher, K. and Scheffer, J. R. and Trotter, J.}
}
@article {4508,
	title = {Asymmetric induction in the solid state photochemistry of an alpha-mesitylacetophenone derivative through the use of ionic chiral auxiliaries},
	journal = {Tetrahedron Letters},
	volume = {40},
	number = {50},
	year = {1999},
	note = {ISI Document Delivery No.: 258FJTimes Cited: 15Cited Reference Count: 8},
	month = {Dec},
	pages = {8733-8736},
	type = {Article},
	abstract = {Irradiation in the crystalline state of salts formed between alpha-mesitylacetophenone-p-carboxylic acid and a variety of optically pure amines - the so-called {\textquoteright}ionic chiral auxiliary{\textquoteright} approach to asymmetric synthesis - leads to the corresponding 2-indanol in excellent yield and in high enantiomeric excess. X-Ray crystallography reveals the source of the enantioselectivity. (C) 1999 Elsevier Science Ltd. All rights reserved.},
	keywords = {ASYMMETRIC INDUCTION, CARBOXYLATE, CRYSTAL, KETONES, PHOTOCHEMISTRY, REARRANGEMENTS},
	isbn = {0040-4039},
	url = {<Go to ISI>://000083827200004},
	author = {Cheung, E. and Rademacher, K. and Scheffer, J. R. and Trotter, J.}
}
@article {4505,
	title = {An ionic chiral auxiliary-induced regioselective and enantioselective Yang photocyclization reaction in the crystalline state},
	journal = {Tetrahedron Letters},
	volume = {40},
	number = {50},
	year = {1999},
	note = {ISI Document Delivery No.: 258FJTimes Cited: 16Cited Reference Count: 19},
	month = {Dec},
	pages = {8729-8732},
	type = {Article},
	abstract = {cis-9-Decalyl aryl ketones undergo Yang photocyclization in solution to afford an approximately 1:1 mixture of two regioisomeric racemic cyclobutanols. In contrast, irradiation in the crystalline state in the presence of various ionic chiral auxiliaries leads to a single cyclobutanol in >98\% enantiomeric excess. X-Ray crystallography reveals the source of the regio-, diastereo- and enantioselectivity. (C) 1999 Elsevier Science Ltd. All rights reserved.},
	keywords = {ASYMMETRIC INDUCTION, CARBOXYLATE, KETONES, ORGANIC-PHOTOCHEMISTRY, PHOTOCHEMISTRY, SOLID-STATE, Yang photocyclization},
	isbn = {0040-4039},
	url = {<Go to ISI>://000083827200003},
	author = {Cheung, E. and Kang, T. and Raymond, J. R. and Scheffer, J. R. and Trotter, J.}
}
@article {4505,
	title = {An ionic chiral auxiliary-induced regioselective and enantioselective Yang photocyclization reaction in the crystalline state},
	journal = {Tetrahedron Letters},
	volume = {40},
	number = {50},
	year = {1999},
	note = {ISI Document Delivery No.: 258FJTimes Cited: 16Cited Reference Count: 19},
	month = {Dec},
	pages = {8729-8732},
	type = {Article},
	abstract = {cis-9-Decalyl aryl ketones undergo Yang photocyclization in solution to afford an approximately 1:1 mixture of two regioisomeric racemic cyclobutanols. In contrast, irradiation in the crystalline state in the presence of various ionic chiral auxiliaries leads to a single cyclobutanol in >98\% enantiomeric excess. X-Ray crystallography reveals the source of the regio-, diastereo- and enantioselectivity. (C) 1999 Elsevier Science Ltd. All rights reserved.},
	keywords = {ASYMMETRIC INDUCTION, CARBOXYLATE, KETONES, ORGANIC-PHOTOCHEMISTRY, PHOTOCHEMISTRY, SOLID-STATE, Yang photocyclization},
	isbn = {0040-4039},
	url = {<Go to ISI>://000083827200003},
	author = {Cheung, E. and Kang, T. and Raymond, J. R. and Scheffer, J. R. and Trotter, J.}
}
@article {4506,
	title = {Linearly conjugated benzocyclohexadienone photochemistry in the solid state: ionic chiral auxiliary mediated asymmetric induction},
	journal = {Tetrahedron Letters},
	volume = {40},
	number = {50},
	year = {1999},
	note = {ISI Document Delivery No.: 258FJTimes Cited: 16Cited Reference Count: 3},
	month = {Dec},
	pages = {8737-8740},
	type = {Article},
	abstract = {Asymmetric induction in the photochemistry of a linearly conjugated benzocyclohexadienone derivative has been achieved for the first time through the use of the solid state ionic chiral auxiliary method. Enantiomeric excesses as high as 70-80\% at reasonable conversions are readily attainable. Crystal structures for both reactant and product are reported. (C) 1999 Elsevier Science Ltd. All rights reserved.},
	keywords = {ASYMMETRIC INDUCTION, KETONES, PHOTOCHEMISTRY, REARRANGEMENT, [pi(a)(2)+sigma(a)(2)]},
	isbn = {0040-4039},
	url = {<Go to ISI>://000083827200005},
	author = {Cheung, E. and Netherton, M. R. and Scheffer, J. R. and Trotter, J.}
}
@article {4506,
	title = {Linearly conjugated benzocyclohexadienone photochemistry in the solid state: ionic chiral auxiliary mediated asymmetric induction},
	journal = {Tetrahedron Letters},
	volume = {40},
	number = {50},
	year = {1999},
	note = {ISI Document Delivery No.: 258FJTimes Cited: 16Cited Reference Count: 3},
	month = {Dec},
	pages = {8737-8740},
	type = {Article},
	abstract = {Asymmetric induction in the photochemistry of a linearly conjugated benzocyclohexadienone derivative has been achieved for the first time through the use of the solid state ionic chiral auxiliary method. Enantiomeric excesses as high as 70-80\% at reasonable conversions are readily attainable. Crystal structures for both reactant and product are reported. (C) 1999 Elsevier Science Ltd. All rights reserved.},
	keywords = {ASYMMETRIC INDUCTION, KETONES, PHOTOCHEMISTRY, REARRANGEMENT, [pi(a)(2)+sigma(a)(2)]},
	isbn = {0040-4039},
	url = {<Go to ISI>://000083827200005},
	author = {Cheung, E. and Netherton, M. R. and Scheffer, J. R. and Trotter, J.}
}
@article {4576,
	title = {The use of ionic chiral sensitizers in the crystalline state: application to the di-pi-methane photorearrangement of a benzonorbornadiene derivative},
	journal = {Tetrahedron Letters},
	volume = {40},
	number = {50},
	year = {1999},
	note = {ISI Document Delivery No.: 258FJTimes Cited: 8Cited Reference Count: 15},
	month = {Dec},
	pages = {8725-8728},
	type = {Article},
	abstract = {Simultaneous asymmetric induction and triplet-triplet energy transfer has been achieved in the di-pi-methane photorearrangement of a benzonorbornadiene derivative through the use of {\textquoteright}ionic chiral sensitizers{\textquoteright}. In this approach, salts formed between a reactant carboxylic acid and optically pure sensitizer amines are irradiated and the products monitored for optical activity following removal of the ionic auxiliary. In contrast to the results in solution, where only racemic products are formed, photolysis of the salts in the crystalline state leads to enantiomeric excesses as high as 91\% at 100\% conversion. (C) 1999 Elsevier Science Ltd. All rights reserved.},
	keywords = {ammonium salts, ASYMMETRIC INDUCTION, di-pi-methane, PHOTOCHEMISTRY, REARRANGEMENT},
	isbn = {0040-4039},
	url = {<Go to ISI>://000083827200002},
	author = {Janz, K. M. and Scheffer, J. R.}
}
@article {3678,
	title = {The ionic auxiliary concept in solid state organic photochemistry},
	journal = {Accounts of Chemical Research},
	volume = {29},
	number = {4},
	year = {1996},
	note = {ISI Document Delivery No.: UE738Times Cited: 121Cited Reference Count: 42},
	month = {Apr},
	pages = {203-209},
	type = {Review},
	keywords = {ASYMMETRIC INDUCTION, chirality, CRYSTAL, KETONES, PHOTOREARRANGEMENT, REACTIVITY, SALTS, SUPRAMOLECULAR PHOTOCHEMISTRY},
	isbn = {0001-4842},
	url = {<Go to ISI>://A1996UE73800006},
	author = {Gamlin, J. N. and Jones, R. and Leibovitch, M. and Patrick, B. and Scheffer, J. R. and Trotter, J.}
}
@article {3678,
	title = {The ionic auxiliary concept in solid state organic photochemistry},
	journal = {Accounts of Chemical Research},
	volume = {29},
	number = {4},
	year = {1996},
	note = {ISI Document Delivery No.: UE738Times Cited: 121Cited Reference Count: 42},
	month = {Apr},
	pages = {203-209},
	type = {Review},
	keywords = {ASYMMETRIC INDUCTION, chirality, CRYSTAL, KETONES, PHOTOREARRANGEMENT, REACTIVITY, SALTS, SUPRAMOLECULAR PHOTOCHEMISTRY},
	isbn = {0001-4842},
	url = {<Go to ISI>://A1996UE73800006},
	author = {Gamlin, J. N. and Jones, R. and Leibovitch, M. and Patrick, B. and Scheffer, J. R. and Trotter, J.}
}
@article {7271,
	title = {CRYSTAL TO MOLECULAR CHIRALITY TRANSFER - SUPRAMOLECULAR PHOTOCHEMISTRY OF CRYSTALLINE CARBOXYLATE SALTS},
	journal = {Tetrahedron Letters},
	volume = {33},
	number = {38},
	year = {1992},
	note = {ISI Document Delivery No.: JN767Times Cited: 25Cited Reference Count: 15},
	month = {Sep},
	pages = {5481-5484},
	type = {Article},
	abstract = {Solid state irradiation of a salt formed between a prochiral, photochemically reactive carboxylic acid and a non-absorbing, optically active amine is shown to lead to an optically active Norrish type II photoproduct whose optical purity depends on the dimorphic crystalline modification photolyzed.},
	keywords = {ASYMMETRIC INDUCTION, REACTIVITY, SOLID-STATE PHOTOCHEMISTRY},
	isbn = {0040-4039},
	url = {<Go to ISI>://A1992JN76700003},
	author = {Jones, R. and Scheffer, J. R. and Trotter, J. and Yang, J.}
}
@article {7271,
	title = {CRYSTAL TO MOLECULAR CHIRALITY TRANSFER - SUPRAMOLECULAR PHOTOCHEMISTRY OF CRYSTALLINE CARBOXYLATE SALTS},
	journal = {Tetrahedron Letters},
	volume = {33},
	number = {38},
	year = {1992},
	note = {ISI Document Delivery No.: JN767Times Cited: 25Cited Reference Count: 15},
	month = {Sep},
	pages = {5481-5484},
	type = {Article},
	abstract = {Solid state irradiation of a salt formed between a prochiral, photochemically reactive carboxylic acid and a non-absorbing, optically active amine is shown to lead to an optically active Norrish type II photoproduct whose optical purity depends on the dimorphic crystalline modification photolyzed.},
	keywords = {ASYMMETRIC INDUCTION, REACTIVITY, SOLID-STATE PHOTOCHEMISTRY},
	isbn = {0040-4039},
	url = {<Go to ISI>://A1992JN76700003},
	author = {Jones, R. and Scheffer, J. R. and Trotter, J. and Yang, J.}
}
