A New Class of Structurally Rigid Tricyclic Chiral Secondary Amine Organocatalyst: Highly Enantioselective Organocatalytic Michael Addition of Aldehydes to Vinyl Sulfones
A new class of chiral secondary amine organocatalyst was rationally designed as an efficient catalyst to catalyze the elusive Michaeladdition of aldehydes to vinyl sulfones. High yield and excellent enantioselectivities could be obtained at room temperature without having to resort to high catalyst loading, anhydrous solvents, and low temperatures. Efficient control of enamine conformation and face
The Organocatalytic Enantioselective Michael Addition of Aldehydes to Vinyl Sulfones in Water
作者:Teck-Peng Loh、Jian Xiao、Yan-Ling Liu
DOI:10.1055/s-0030-1258483
日期:2010.8
The first organocatalytic enantioselective Michael addition of aldehydes to vinyl sulfones in water was achieved using our rationally designed organocatalyst. The rigid nature of the tricycle with an inherent chiral pocket provides a well-organized chiral environment, which together with the hydrophobic pocket, enabled this elusive reaction to proceed smoothly in water.