Département de chimie moléculaire

Hydrogenation of a mixt. of ortho- and para-dinitro derivs. of 1,4-dimethoxybenzene in Et acetate under palladium catalysis yields 3,6-dimethoxybenzene-1,2-diamine as the sole product. This diamine is then converted into 4,7-dimethoxy-2-methyl-1H-benzimidazole, a building block for the prepn. of imidazobenzo(hydro)quinones. [on SciFinder(R)]