Iminophosphorane-mediated annelation of an imidazole ring into a benzimidazole ring: synthesis of imidazo[1,5-a-]benzimidazole derivatives. Crystal structure of 1-(4-methoxyphenylimino)-2-(4-methoxyphenylcarbamoyl)-2,3-dihydro-1-imidazo[1,5-a]benzimidazole | Publicación