Highly enantioselective dialkylzinc addition to a series of aldehydes was developed based on chiral Zn(II)-BINOLate catalysts bearing phosphonates [P(=O)(OR) 2 ] and phosphoramides [P(=O)(NMe 2 ) 2 ] at the 3,3'-positions. The reactions proceeded smoothly and showed reductions in the amounts of both catalysts and dialkylzinc reagents to be loaded.
基于带有
膦酸酯 [P(=O)(OR) 2 ] 和
磷酰胺 [P(=O)(NMe 2 ) 2 ] 的手性 Zn(II)-BINOLate 催化剂,开发了对一系列醛的高对映选择性二烷基
锌加成3,3'-位置。反应进行得很顺利,催化剂和二烷基
锌试剂的负载量都有所减少。