Nitrones and Oxaziridines. XXV. Bromination of 2-t-Butyl- and 2-Phenyl-1-pyrroline 1-Oxides

Abstract

Certain 2-t-butyl- and 2-phenyl-1-pyrroline 1-oxides undergo bromination but no 3-bromo compounds could be observed, although their intermediacy is proposed. The isolated products are 2H-pyrrole 1-oxide derivatives-further brominated in some cases. 4-Bromo-3-oxo-1-pyrroline 1-oxides and 4,4-dibromo-3-oxo-1-pyrroline 1-oxides can be formed by treatment of the related oxo nitrones with copper(II) bromide and bromine respectively.