N-[2-(dimethylamino)ethyl]-7-methoxy-2-(thiophen-2-yl)-1H-benzo[d]imidazole-4-carboxamide 、
三溴化硼 以to afford the desired product (69 mg, 35% yield) as a light yellow solid的产率得到N-[2-(dimethylamino)ethyl]-7-hydroxy-2-(thiophen-2-yl)-1H-benzo[d]imidazole-4-carboxamide