Efficient synthesis of optically active β-hydroxy p-tolylsulfones with very high enantiomeric excess via CBS–oxazaborolidine-catalyzed borane reduction
作者:Byung Tae Cho、Dong Jun Kim
DOI:10.1016/s0957-4166(01)00359-7
日期:2001.8
A simple, efficient synthesis of optically active beta -hydroxy p-tolylsulfones with > 99% e.e. by employing CBS oxazaboronlidene-catalyzed asymmetric borane reduction of beta -keto p-tolylsulfones using N-ethyl-N-iso-propylaniline-borane complex as the borane carrier has been established. (C) 2001 Elsevier Science Ltd. All rights reserved.