Copper-Catalyzed Tandem Cross-Coupling and Alkynylogous Aldol Reaction: Access to Chiral Exocyclic α-Allenols

Org Lett. 2021 Jul 2;23(13):5175-5179. doi: 10.1021/acs.orglett.1c01712. Epub 2021 Jun 17.

Abstract

An enantioselective copper-catalyzed tandem cross-coupling/alkynylogous aldol reaction has been developed. The tetrasubstituted allenoates containing both central and axial chirality have been obtained in moderate to good yields and excellent enantio- and diastereoselectivity. Distinct from the previous use of Cu(I) salts, this protocol features the use of copper(II) salts as a catalytic precursor in this asymmetric cross-coupling reaction.

Publication types

  • Research Support, Non-U.S. Gov't