Method for biotechnologically preparing (S)-(-)-alpha-cyano-3-phenoxybenzyl alcohol
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0080827A2
公开(公告)日:1983-06-08
(S)-(-)-α-cyano-3-phenoxybenzyl alcohol, which is the alcohol moiety of pyrethroids, effective insecticides, is prepared by reacting organic carboxylic acid ester, such as acetic acid ester, of racemic (R.S)-α-cyano-3-phenoxybenzyl alcohol with an esterase, wherein the ester of (S)-(-)-α-cyano-3-phenoxybenzyl alcohol is predominantly hydrolyzed. Thus. asymmetric hydrolysis permits optical resolution of the (S)-(-)-isomer alcohol from the ester of its antipode, in a high optical purity. The esterase may be of microorganism or animal pancreas or liver.
(S)-(-)-α-氰基-3-苯氧基苄醇是有效杀虫剂拟除虫菊酯的醇基,其制备方法是将外消旋(R.S)-α-氰基-3-苯氧基苄醇的有机羧酸酯(如乙酸酯)与酯酶反应,其中(S)-(-)-α-氰基-3-苯氧基苄醇的酯主要被水解。 因此,不对称水解允许以高光学纯度从其反式的酯中光学分解出(S)-(-)-异构体醇。 酯酶可以是微生物或动物的胰腺或肝脏。