Synthesis of benzo[1,3]oxazines via copper(i)-catalyzed cascade annulation of nitriles, aldehydes and diaryliodonium salts†
Abstract
A copper(I)-catalyzed one-pot [2 + 2 + 2] cascade annulation reaction of diaryliodoniums, nitriles, and aldehydes has been developed for the efficient synthesis of 2,4-substituted benzoxazine derivatives.