Ethyl 2-methyl-4-phenylpyrido[1,2-a]benzimidazole-3-carboxylate

Abstract

The title compound, C21H18N2O2, was synthesized using a novel tandem annulation reaction between (1H-benzimidazol-2-yl)(phenyl)methanone and (E)-ethyl 4-bromobut-2-enoate under mild conditions. The dihedral angles between the mean planes of the five-membered imidazole ring and the pyridine, benzene and phenyl rings are 0.45 (6), 1.69 (1) and 70.96 (8)°, respectively. In the crystal, molecules are linked through intermolecular C—H...N hydrogen bonds.