title: Rhodium-catalyzed annulation between 2-arylimidazo[1,2-a]pyridines and alkynes leading to pyrido[1,2-a]benzimidazole derivatives.
abstract: A rhodium-catalyzed annulation between 2-arylimidazo[1,2-a]pyridines and alkynes was developed, leading to pyrido[1,2-a]benzimidazole derivatives in moderate to excellent yields. Notably, the ring C in pyrido[1,2-a]benzimidazole and the naphthalene framework were constructed consecutively, which provided a potential pathway leading to such a structure. This procedure tolerated chloro, bromo, cyano and methoxycarbonyl groups.
authors: School of Petrochemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China. jiangcheng@cczu.edu.cn.
authors: Haibo
authors: H
authors: Peng
authors: Jin-Tao
authors: JT
authors: Yu
authors: Yan
authors: Y
authors: Jiang
authors: Lei
authors: L
authors: Wang
authors: Jiang
authors: J
authors: Cheng
mesh_terms: D000480:Alkynes / Q000737:chemistry*; D001562:Benzimidazoles / Q000737:chemistry*; D002384:Catalysis; D018360:Crystallography, X-Ray; D008968:Molecular Conformation; D011725:Pyridines / Q000737:chemistry*; D012238:Rhodium / Q000737:chemistry*; D013379:Substrate Specificity
chemical_list: D000480:Alkynes; D001562:Benzimidazoles; D011725:Pyridines; D012238:Rhodium; C031000:benzimidazole