Asymmetric synthesis of optically active halohydrins and oxiranes by enantioselective reduction of prochiral α-haloketones with chirally modified lithium borohydride
作者:Kenso Soai、Takashi Yamanoi、Hitoshi Hikima
DOI:10.1016/0022-328x(85)87441-6
日期:1985.7
Prochiral α-haloketones are reduced enantioselectively with the asymmetric reducing system lithium borohydride N,N′-dibenzoylcystine /t-butyl alcohol to give the corresponding halohydrins with up to 86% enantiomeric excess, some of which are converted to optically active oxiranes.
用不对称还原系统硼氢化锂N,N'-二苯甲酰基胱氨酸/叔丁醇对手性α-卤酮进行对映体选择性还原,得到相应的卤代醇,其对映体过量高达86%,其中一些转化为旋光的环氧乙烷。