作者:Kaoru Nakamura、Shin-ichi Kondo、Yasushi Kawai、Kouichi Hida、Kazutada Kitano、Atsuyoshi Ohno
DOI:10.1016/0957-4166(96)00020-1
日期:1996.2
Although yeast reduction of α-diketones 1 affords a mixture of two α-hydroxy ketones and a vic-diol, the use of methyl vinyl ketone as an enzyme inhibitor prevents the production of the diol. Regioselectivity in the reduction to afford α-hydroxy ketones is improved by thermal pre-treatment of baker's yeast. Thus, 1-phenyl-2-hydroxy-1-propanone 3a is obtained in 80 % yield with >98% e.e.
尽管酵母还原α-二酮1提供了两种α-羟基酮和vic-二醇的混合物,但是使用甲基乙烯基酮作为酶抑制剂阻止了二醇的产生。通过对面包酵母的热预处理可以提高还原得到α-羟基酮的区域选择性。因此,以80%的产率和> 98%的ee获得了1-苯基-2-羟基-1-丙酮3a。