作者:Kounosuke Oisaki、Dongbo Zhao、Motomu Kanai、Masakatsu Shibasaki
DOI:10.1021/ja061815w
日期:2006.6.1
An enantioselective aldol reaction between ketones and ketene silyl acetals is described using CuF-chiral phosphine as a catalyst. The key for high enantioselectivity was the development of a novel ligand derived from Taniaphos combined with the unique accelerative effect of PhBF3K. These conditions are applicable to various substrates such as aromatic, aliphatic, and heteroaromatic ketones. In the
描述了使用 CuF-手性膦作为催化剂的酮和烯酮甲硅烷基缩醛之间的对映选择性羟醛反应。高对映选择性的关键是开发了一种源自 Taniaphos 的新型配体,并结合了 PhBF3K 的独特加速作用。这些条件适用于各种底物,例如芳香族、脂肪族和杂芳香族酮。在取代亲核试剂的情况下,反应进行得很好。非对映选择性与乙烯酮甲硅烷基缩醛的几何形状无关。这是使用乙烯酮甲硅烷基缩醛对酮进行催化对映选择性和非对映选择性羟醛反应的第一个例子。