A new chiral catalyst for the enantioselective synthesis of secondary alcohols and deuterated primary alcohols by carbonyl reduction
作者:E.J. Corey、John O. Link
DOI:10.1016/s0040-4039(01)93871-7
日期:1989.1
efficient synthesis of(S)-(−)-2-(di-β-naphthylhydroxymethyl)pyrrolidine (1) makes available the oxazaborolidine derivatives2 and3 which are excellent catalysts for borane reduction of a variety of achiral ketones to chiral secondary alcohols, e.g. acetophenone, 98% ee; α-tetralone, 95% ee; and methyl-4-oxo-4-phenyl butyrate, 96% ee. The synthesis of chiral 1-deuterio primary alcohols from achiral aldehydes
(S) -(-)-2-(二-β-萘基羟甲基)吡咯烷(1)的有效合成提供了恶唑硼烷衍生物2和3,它们是将多种非手性酮硼烷还原为手性仲醇的出色催化剂,例如苯乙酮,98%ee;α-四氢萘酮,ee 95%; 和4-氧代-4-苯基丁酸甲酯,ee为96%。还证明了在2 H-儿茶酚硼烷作为还原剂存在下,以B-正丁基恶唑硼烷(4)为催化剂,由非手性醛类合成手性1-氘代伯醇。环己烷甲醛,ee的92%; 和正辛烷,90%ee。