Asymmetric Aldol Reaction of Alkenyl Esters with α-Keto Esters Catalyzed by Chiral Tin Alkoxides
作者:Akira Yanagisawa、Chika Uchiyama、Kotaro Takagi
DOI:10.1055/a-1665-9014
日期:2021.12
A catalytic enantioselective aldol reaction of alkenyl esters with α-ketoesters was achieved by using an (R)-BINOL-derived chiral tin dibromide possessing 4-t-butylphenyl groups at the 3- and 3′-positions as a chiral precatalyst in the presence of sodium methoxide and methanol. Optically active aldol products possessing a chiral tertiary carbon were diastereoselectively obtained with up to 92% ee