Dinuclear zinc complex catalyzed asymmetric methylation and alkynylation of aromatic aldehydes
作者:Shanshan Liu、Gao-Wei Li、Xiao-Chao Yang、De-Yang Zhang、Min-Can Wang
DOI:10.1039/c7ob01717k
日期:——
A general AzePhenol dinuclear zinc catalytic system has been successfully developed and introduced into the asymmetric addition of dimethylzinc and alkynylzinc to aromaticaldehydes. In this system, an azetidine derived chiral ligand has proven to be an effective enantioselective promoter. Under the optimal reaction conditions, a series of chiral 1-hydroxyethyl (up to 99% ee) and secondary propargylic