名称:
Exo-10,10-diphenyl-2,10-camphanediol as a new chiral auxiliary in asymmetric reduction
摘要:
Stereoselective reduction of alpha-keto ester derived from exo-10, 10-diphenyl-2, 10-camphanediol with various hydrides proceeded with high diastereoselectivities (greater than or equal to 96% de) to afford the corresponding alpha-hydroxy ester with excellent yields. Change of reducing reagents and molar ratio modifications leading to dramatic changes in diastereofacial selectivity were examined. The auxiliary can be recovered from the asymmetric reaction products without loss of chirality. (C) 1999 Elsevier Science Ltd. All rights reserved.
DOI:
10.1016/s0040-4039(98)02548-9