@article {3082, title = {IONIC CHIRAL HANDLE-INDUCED ASYMMETRIC-SYNTHESIS IN A SOLID-STATE NORRISH TYPE-II PHOTOREACTION}, journal = {Tetrahedron-Asymmetry}, volume = {5}, number = {8}, year = {1994}, note = {ISI Document Delivery No.: PC678Times Cited: 22Cited Reference Count: 9}, month = {Aug}, pages = {1415-1418}, type = {Article}, abstract = {Irradiation of crystals of salts formed between 4-(2,4,6-triisopropylbenzoyl)benzoic acid (1a) and various optically active amines is shown to lead to optically active Norrish type II photoproducts in low to moderate enantiomeric excesses, a process in which the ammonium ion has acted as an {\textquoteright}{\textquoteright}ionic chiral handle.{\textquoteright}{\textquoteright} X-ray crystallography reveals that the salts crystallize with two independent, mirror image-related molecules of the benzophenone moiety in the asymmetric unit, and this is suggested to be the source of the low ees observed.}, keywords = {2, 4, 6-TRIISOPROPYLBENZOPHENONES, INDUCTION, PHOTOCHEMISTRY, SALTS}, isbn = {0957-4166}, url = {://A1994PC67800004}, author = {Koshima, H. and Maeda, A. and Masuda, N. and Matsuura, T. and Hirotsu, K. and Okada, K. and Mizutari, H. and Ito, Y. and Fu, T. Y. and Scheffer, J. R. and Trotter, J.} }