ChemInform Abstract: The Versatile Roles of Ammonium Salt Catalysts in Enantioselective Reduction and Alkylation of α,β‐Unsaturated Aldehydes: Iminium Catalysis, Enamine Catalysis and Acid Catalysis.

Abstract

AbstractThe reduction of cinnamaldehydes with Hantzsch ester and a subsequent reaction of intermediate saturated aldehydes with a carbocation generated from alcohols such as (II) and (VII) leads to desired adducts in high yields and good enantioselectivities.