Organocatalytic Enantioselective Decarboxylative Michael Addition of β-Keto Acids to Dicyanoolefins and Disulfonylolefins
作者:Yi Wei、Ran Guo、Yanfeng Dang、Jing Nie、Jun-An Ma
DOI:10.1002/adsc.201600485
日期:2016.9.1
A convenient organocatalyticenantioselective decarboxylative Michaeladdition of β‐keto acids to dicyanoolefins and disulfonylolefins is realized. In the presence of saccharide‐derived chiral amino thioureas, the reaction proceeded smoothly to afford a wide range of the Michael adducts in 62–99% yield with 70–94% ee. Moreover, one of the chiral adducts obtained could be readily converted into the