A study of methyl and tert-butyl as non migrating groups in the reaction of me(organyl)zinc and t-bu(organyl)zinc with aldehydes
作者:Eric Laloë、Morris Srebnik
DOI:10.1016/s0040-4039(00)77253-4
日期:1994.8
A series of mixed methyl (organyl) and tert-butyl(organyl)zincs were prepared by reaction of ZnCl2 with Grignard reagents. In the presence of salts t-butyl migrates to a lessor extent than methyl in the reaction with aldehydes. In the absence of salts both groups are comparable. BuZnMe prepared under salt-free conditions adds to benzaldehyde in 82.4 % ee and in 85 % yield, comparable to the reaction with distilled dibutylzinc.