One-Pot Enol Silane Formation-Mukaiyama Aldol-Type Addition to Dimethyl Acetals Mediated by TMSOTf
作者:C. Wade Downey、Miles W. Johnson、Kathryn J. Tracy
DOI:10.1021/jo8001084
日期:2008.4.1
Various ketones, esters, amides, and thioesters add in high yield to dimethyl acetals in the presence of silyl trifluoromethanesulfonates and an amine base. Acetals derived from aryl, unsaturated, and aliphatic aldehydes are all effective substrates. The reaction proceeds in a single reaction flask, with no purification of the intermediate enol silane necessary.
在三氟甲磺酸甲硅烷基酯和胺碱的存在下,各种酮,酯,酰胺和硫代酯以高收率添加到二甲基乙缩醛中。衍生自芳基,不饱和和脂族醛的缩醛都是有效的底物。反应在单个反应烧瓶中进行,无需纯化中间体烯醇硅烷。