Copper-Catalyzed Enantioselective 1,2-Reduction of Cycloalkenones

Org Lett. 2021 Aug 6;23(15):5658-5663. doi: 10.1021/acs.orglett.1c01744. Epub 2021 Jul 13.

Abstract

We report an asymmetric 1,2-reduction of cyclic α,β-unsaturated ketones to access various enantiomerically enriched cyclic allylic alcohols under mild conditions, catalyzed by in situ generated copper hydride ligated with (R)-DTBM-C3*-TunePhos. α-Brominated cycloalkenones were reduced with excellent enantioselectivities of up to 98% ee, while substrates that were without α-substituents were reduced chemoselectively, with moderate enantioselectivities.

Publication types

  • Research Support, Non-U.S. Gov't