Chiral dendrimers bearing four or twelve chiral β-amino alcohols on the hyperbranched flexible carbosilane chain-ends act as efficient chiral catalysts for the enantioselective addition of dialkylzinc to aldehydes to afford enantiomerically enriched sec-alcohols with up to 93% e.e.
在高支化柔性碳
硅烷链末端上带有四个或十二个手性β-
氨基醇的手性树枝状聚合物可作为有效的手性催化剂,用于将二烷基
锌对映体选择性地加成醛,以提供对映体富集的仲醇,其ee最高可达93%