A chiralsecondaryaminephosphoramide was developed and identified as a powerful catalyst for the Mukaiyama–Michael addition of fluorinatedenolsilylethers to tetrasubstituted olefins. The resulting products are obtained with high enantioselectivities and contain a quaternarycarbonstereocenter bearing either a difluoroalkyl or monofluoroalkyl group.
Ni-Catalyzed Highly Chemo-, Regio-, and Enantioselective Decarboxylative Aldol Reaction of β,γ-Unsaturated α-Ketoesters with β-Ketoacids
作者:Ai-Jia Wei、Jing Nie、Yan Zheng、Jun-An Ma
DOI:10.1021/jo502741z
日期:2015.4.17
A novel Ni-catalyzed decarboxylative aldol reaction of beta,gamma-unsaturated alpha-ketoesters with beta-ketoacids is reported. The reaction proceeds smoothly with high chemo-, regio-, and enantioselectivity. This protocol provides a Convenient approach to access enantioenriched chiral tertiary alcohols.