Diastereo- and Enantioselective Reductive Aldol Reaction with Trichlorosilane Using Chiral Lewis Bases as Organocatalysts
作者:Masaharu Sugiura、Norimasa Sato、Yuko Sonoda、Shunsuke Kotani、Makoto Nakajima
DOI:10.1002/asia.200900450
日期:2010.3.1
Chiral Lewis base organocatalysts activate trichlorosilane to promote the tandem conjugate reduction/aldol reaction of α,β‐unsaturated ketones with aldehydes to give optically active β‐hydroxy ketones with good to high syn diastereo‐ and enantioselectivities. The reaction tolerates α,β‐unsaturated aldehydes owing to the chemoselective conjugate reduction of enones in the presence of enals.
手性路易斯碱的有机催化剂激活三氯硅烷促进串联共轭还原/α的醛醇缩合反应,β不饱和酮与醛,得到具有良好的高光学活性的β羟基酮顺diastereo-和对映选择性。由于在烯醛存在下烯酮的化学选择性共轭还原,该反应可耐受α,β-不饱和醛。