ChemInform Abstract: An Efficient Synthetic Protocol for Quinoxalinones, Benzoxazinones, and Benzothiazinones from 2‐Oxo‐2‐aryl‐acetyl Bromide Precursors.

Abstract

Bromide Precursors. -Reaction of 2-oxo-2-arylacetyl bromides (II), obtained by SeO2 oxidation of α-bromoketones, with phenylenediamines, o-aminophenol, and o-aminothiophenol provides a facile and efficient access to quinoxalinones, benzoxazinones and benzothiazinones, respectively. -(NAGARAJ, M.; SATHIYAMOORTHY, S.; BOOMINATHAN, M.; MUTHUSUBRAMANIAN*, S.; BHUVANESH, N.; J. Heterocycl. Chem. 50 (2013) 5, 1146-1151, http://dx.