Oxidative Route to Indoles via Intramolecular Amino-Hydroxylation of o-Allenyl Anilines

J Org Chem. 2021 Aug 6;86(15):10713-10723. doi: 10.1021/acs.joc.1c01379. Epub 2021 Jul 20.

Abstract

A new intramolecular oxidative amino-hydroxylation of o-allenyl anilines is reported. Treatment of carbamate-protected anilines with lead(IV) carboxylates in dichloromethane at room temperature results in facile tandem C-N (allene cyclization) and C-O bond formation (carboxylate trapping) to form indole products. Detailed reaction scope, mechanistic and kinetic studies suggest a reaction pathway involving an initial Wessely dearomatization step followed by cyclization and rearomatization.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aniline Compounds*
  • Catalysis
  • Cyclization
  • Indoles*
  • Kinetics
  • Oxidative Stress

Substances

  • Aniline Compounds
  • Indoles