Catalysis Communications

Kinetic resolution of (R, S)-2, 2-dimethylcyclopropanecarboxamide by Delftia tsuruhatensis ZJB-05174: Role of organic cosolvent in reaction medium

RC Zheng, YS Wang, YG Zheng, YC Shen

Index: Zheng, Ren-Chao; Wang, Yuan-Shan; Zheng, Yu-Guo; Shen, Yin-Chu Catalysis Communications, 2012 , vol. 18, p. 68 - 71

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Citation Number: 7

Abstract

Both enantioselectivity and catalytic activity were greatly enhanced in Delftia tsuruhatensis ZJB-05174 catalyzed kinetic resolution of 2, 2-dimethlycyclopropanecarboxamide in the presence of ethanol and acetonitrile. The enantiomeric ratio (E) rose from 27 to 140 and 90 by addition of 5% acetonitrile and ethanol, respectively. In the scaled-up biotransformation, the reaction time was shortened to 1.33 h with an ees of 99% and 12.4 g of optically pure ...