One-pot synthesis of 6H-benzo[b]benzo[4,5]imidazo[1,2-d][1,4]oxazines via a copper-catalyzed process†
Abstract
A convenient and efficient copper-catalyzed one-pot process for the construction of 6H-benzo[b]benzo[4,5]imidazo[1,2-d][1,4]oxazines through reactions of