A highly efficient synthesis of imidazo-fused polyheterocycles via Groebke–Blackburn–Bienaymè reaction catalyzed by LaCl3·7H2O
摘要:
A highly efficient and mild protocol for the synthesis of imidazo-fused polyheterocycles via Groebke-Blackburn-Bienayme reaction under the influence of catalytic amount of lanthanum chloride heptahydrate has been described. A wide range of nitrogen-enriched polyheterocycles are synthesized with high yields under neat conditions. (C) 2014 Elsevier Ltd. All rights reserved.