Pd-Catalyzed Asymmetric Decarboxylative Cycloaddition of Vinylethylene Carbonates with Imines

Abstract

An efficient method for the enantioselective synthesis of β-tertiary β-amino alcohol derivatives through Pd-catalyzed decarboxylative cycloaddition of vinylethylene carbonates with imines was developed. By using a palladium complex generated in situ from [Pd2(dba)3]·CHCl3 and phosphoramidite L2 as a catalyst under mild reaction conditions, the process provided 4-substituted-4-vinyloxazolidines in good to high yields with high levels of enantio- and diastereoselectivities.