Iron-Catalyzed Allylic Defluorinative Ketone Olefin Coupling

Org Lett. 2022 May 6;24(17):3211-3216. doi: 10.1021/acs.orglett.2c00979. Epub 2022 Apr 28.

Abstract

In this protocol, we demonstrate our discovery that iron is able to efficiently catalyze the reductive allylic defluorinative ketyl olefin coupling reaction between α-trifluoromethyl alkenes and unactivated ketones. This operationally simple cross-electrophile reaction circumvents the use of pre-generated organometallics and allows for the synthesis of diverse functional-group-rich tertiary gem-difluorohomoallylic alcohols through a polarity-reversed strategy. Preliminary mechanistic studies support a mechanism that proceeds through a ketyl formation/olefin insertion/β-fluoro elimination sequence.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alcohols
  • Alkenes*
  • Catalysis
  • Iron
  • Ketones*

Substances

  • Alcohols
  • Alkenes
  • Ketones
  • Iron