Phosphoric acid-catalyzed asymmetric classic Passerini reaction

J Am Chem Soc. 2015 Nov 11;137(44):14039-42. doi: 10.1021/jacs.5b09117. Epub 2015 Oct 30.

Abstract

An efficient enantioselective classic three-component Passerini reaction with a broad substrate scope in the presence of a chiral phosphoric acid catalyst has been developed. This represents the general example for classic three-component Passerini reaction with good to excellent enantioselectivies involving aromatic aldehydes and the bulky pivalaldehyde under mild reaction conditions. The feature of this method is highlighted by using a chiral phosphoric acid to activate carboxylic acid, aldehyde, and isocyanide for the facile construction of widely useful complex compounds.