The present invention relates to a method for fractionating stereoisomeric compounds which have at least one alcohol and/or amino group.
本发明涉及一种用于分离具有至少一种醇和/或氨基团的立体异构化合物的方法。
Process for producing optically active halohydrin compound
申请人:——
公开号:US20040082820A1
公开(公告)日:2004-04-29
A process of preparing an optically active halohydrin compound characterized by comprising asymmetric hydrogen transfer reduction of an &agr;-haloketone compound in the presence of a group 9 transition metal compound having a substituted or unsubstituted cyclopentadienyl group and an optically active diamine compound. The asymmetric hydrogen transfer reduction is preferably conducted in the presence of a base.
Process for the enantioselective preparation of secondary alcohols by lipase-catalyzed solvolysis of the corresponding acetoacetic esters
申请人:Popp Alfred
公开号:US20050032182A1
公开(公告)日:2005-02-10
Process for the enantioselective preparation of secondary alcohols, wherein a racemic or enantiomerically enriched mixture of acetoacetic esters of chiral secondary alcohols is subjected to enantioselective enzymatic solvolysis in the presence of a nucleophile and a lipase capable of the solvolytic cleavage of an ester group.
PROCESS FOR PRODUCING OPTICALLY ACTIVE (-)-2-HALO-1-(SUBSTITUTED PHENYL)ETHANOL AND (-)-SUBSTITUTED STYRENE OXIDE
申请人:KANEGAFUCHI KAGAKU KOGYO KABUSHIKI KAISHA
公开号:EP0493617A1
公开(公告)日:1992-07-08
A process for producing (-)-substituted styrene oxide efficiently, which comprises reducing 2-bromo-1-(3'-chlorophenyl)ethanone asymmetrically into (-)-2-bromo-1-(3'-chlorophenyl)ethanol in the presence of a microorganism belonging to any of the 11 genera including Ashbya and Brettanomyces, and cyclizing the isolated and purified product under an alkaline condition into (-)-substituted styrene oxide.
Verfahren zur Herstellung von stereoisomeren Carbonsäureestern
申请人:BASF AKTIENGESELLSCHAFT
公开号:EP1031629A2
公开(公告)日:2000-08-30
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von stereoisomeren Carbonsäureestern bestehend aus einer Säure- und einer Alkohol-Komponente mit jeweils mindestens einem chiralen Zentrum, wobei mindestens ein Stereoisomer des Carbonsäureesters in einem Überschuß vorliegt, indem man einen racemischen Carbonsäureester mit einem racemischen Alkohol in Gegenwart einer Carboxylesterhydrolase (EC 3.1.1) umsetzt.