Reductive Allylic Defluorinative Cross-Coupling Enabled by Ni/Ti Cooperative Catalysis

Org Lett. 2019 Oct 18;21(20):8316-8322. doi: 10.1021/acs.orglett.9b03102. Epub 2019 Oct 1.

Abstract

Unactivated alkyl chlorides are abundant building blocks in organic synthesis, but they have been rarely engaged in cross-electrophile coupling. Herein, we report a Ni/Ti-cocatalyzed reductive allylic defluorinative cross-coupling between trifluoromethyl alkenes and unactivated alkyl chlorides and bromides, enabling the efficient preparation of diverse functional-group-rich gem-difluoroalkenes. Notably, synthesis of the gem-difluoroalkene analogues of azaperone, haloperidol, and benperidol was also accomplished using our method as a key step.

Publication types

  • Research Support, Non-U.S. Gov't