Iron-catalyzed 2-arylbenzoxazole formation from o-nitrophenols and benzylic alcohols

Org Lett. 2012 Jun 1;14(11):2722-5. doi: 10.1021/ol300937z. Epub 2012 May 23.

Abstract

The iron-catalyzed 2-arylbenzoxazole formation from o-nitrophenols and benzylic alcohols using hydrogen transfer is described. Various 2-arylbenzoxazoles were selectively obtained in good to excellent yields. The reaction tolerated a wide range of functionalities. The alcohol oxidation, nitro reduction, condensation, and dehydrogenation were realized in a cascade without external reducing reagent and oxidant.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Benzoxazoles / chemical synthesis*
  • Benzoxazoles / chemistry
  • Benzyl Alcohols / chemistry*
  • Catalysis
  • Combinatorial Chemistry Techniques
  • Cyclization
  • Iron / chemistry*
  • Molecular Structure
  • Nitrophenols / chemistry*
  • Oxidation-Reduction

Substances

  • Benzoxazoles
  • Benzyl Alcohols
  • Nitrophenols
  • Iron