Journal of the American Chemical Society, Vol.139, No.1, 95-98, 2017
Frustrated Lewis Acid/Bronsted Base Catalysts for Direct Enantioselective alpha-Amination of Carbonyl Compounds
A method for enantioselective direct aamination reaction catalyzed by a sterically "frustrated" Lewis acid/Bronsted base complex is disclosed. Cooperative functioning of the Lewis acid and Bronsted base components gives rise to in situ enolate generation from monocarbonyl compounds. Subsequent reaction with hydrogen-bond activated dialkyl azodicarboxylates delivers alpha-aminocarbonyl compounds in high enantiomeric purity.