(+)-(R)-1-Amino-2,2-difluorocyclopropane-1-carboxylic acid was synthesized via the lipase-catalyzed asymmetric acetylation of a pro-chiral diol as the key step.
Efficient synthesis of (R)- and (S)-1-amino-2,2-difluorocyclopropanecarboxylic acid via lipase-catalyzed desymmetrization of prochiral precursors
作者:Masayuki Kirihara、Masashi Kawasaki、Tomofumi Takuwa、Hiroko Kakuda、Takahiro Wakikawa、Yoshio Takeuchi、Kenneth L. Kirk
DOI:10.1016/s0957-4166(03)00350-1
日期:2003.6
The asymmetric syntheses of (+)-(R)-1-amino-2,2-difluorocyclopropane-1-carboxylic acid and its enantiomer have been accomplished. Key reactions in the synthetic design are lipase-catalyzed desymmetrization of a prochiral diol and a prochiral diacetate. (C) 2003 Elsevier Science Ltd. All rights reserved.