Visible-Light-Induced α,γ-C(sp3)-H Difunctionalization of Piperidines

Org Lett. 2022 Apr 22;24(15):2894-2898. doi: 10.1021/acs.orglett.2c00831. Epub 2022 Apr 13.

Abstract

Herein, we describe a novel protocol for visible-light-induced α,γ-C(sp3)-H difunctionalization of piperidines. This redox-neutral, atom-economical protocol, which exhibits a broad substrate scope and good functional group compatibility, constitutes a concise, practical method for constructing piperidine-containing bridged-ring molecules. Preliminary mechanistic studies indicated that highly regioselective activation of the inert γ-C(sp3)-H bond of piperidines was achieved through a 1,5-hydrogen atom transfer reaction of a nitrogen radical generated in situ.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Catalysis
  • Hydrogen* / chemistry
  • Light*
  • Oxidation-Reduction
  • Piperidines / chemistry

Substances

  • Piperidines
  • Hydrogen