Aerobic Catalyzed Oxidative Cross-Coupling of N, N-Disubstituted Anilines and Aminonaphthalenes with Phenols and Naphthols

Org Lett. 2020 Mar 6;22(5):1765-1770. doi: 10.1021/acs.orglett.0c00046. Epub 2020 Feb 12.

Abstract

The cross-coupling of N,N-dialkyl aniline and aminonaphthalenes with phenols and naphthols using a Cr-salen catalyst under aerobic conditions was developed. Notably, air serves as an effective oxidant affording products in high selectivity. Initial mechanistic studies suggest an outer-sphere oxidation of the aniline/aminonaphthalene partner, followed by nucleophilic attack of the phenol/naphthol. Single products were observed in most cases, whereas mixtures of C-C and C-O coupled products arose from reactions involving aminonapthalene and sterically unencumbered phenols.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Aniline Compounds / chemistry
  • Catalysis
  • Molecular Structure
  • Naphthols / chemistry*
  • Oxidation-Reduction
  • Oxidative Stress
  • Phenols / chemistry*

Substances

  • Aniline Compounds
  • Naphthols
  • Phenols
  • aniline