ChemInform Abstract: Facile and Selective Synthesis of Imidazobenzimidazoles via a Copper‐Catalyzed Domino Addition/Cycloisomerization/Coupling Process.

Abstract

Facile and Selective Synthesis of Imidazobenzimidazoles via a Copper-Catalyzed Domino Addition/Cycloisomerization/Coupling Process. -Using primary propargylic amines and o-haloarylcarbodiimides as starting materials, a variety of substituted benzo[d]imidazo[1,2-a]imidazoles is regioselectively assembled. This copper(I)-catalyzed domino transformation is likely the result of a novel addition/cycloisomerization/coupling process. -(XU, B.; PENG, B.; CAI, B.; WANG, S.; WANG, X.; LV*, X.; Adv. Synth. Catal. 358 (2016) 4, 653-660, http://dx.