Copper-catalyzed oxidative cyclization of 2-(1 H -pyrrol-1-yl)aniline and alkylsilyl peroxides: a route to pyrrolo[1,2- a ]quinoxalines.

An efficient method was developed for the one-pot construction of pyrrolo[1,2- a ]quinoxalines via a Cu(II)-catalyzed domino reaction between 2-(1 H -pyrrol-1-yl)anilines and alkylsilyl peroxides. This reaction proceeds through C-C bond cleavage and new C-C and C-N bond formation. A mechanistic study suggests that alkyl radical species participate in the cascade reaction.