Copper-Catalyzed Asymmetric Allylation of N-Aryl Aldimines

J Org Chem. 2024 Jan 5;89(1):313-320. doi: 10.1021/acs.joc.3c02035. Epub 2023 Dec 11.

Abstract

The copper-catalyzed enantioselective allylation reaction of N-aryl aldimines has been developed using a combination of Cu(OAc)2 and SPINOL-based phosphonamidite. This protocol significantly broadens the substrate scope, such that imines bearing various ortho-substituents on the N-aryl were converted smoothly into homoallylic amines in up to 99% yield and 98% ee. Taking advantage of the diversity of the N-aryl motif, three kinds of N-heterocyclic compounds were constructed, respectively, from the corresponding homoallylic amines in merely one step.