Synthesis of 3,6-Dimethoxybenzene-1,2-diamine and of 4,7-Dimethoxy-2-methyl-1H-benzimidazole
作者:Christophe Morin、Tatiana Besset
DOI:10.1055/s-0028-1088049
日期:2009.5
Hydrogenation of a mixture of ortho- and para-dinitro derivatives of 1,4-dimethoxybenzene in ethyl acetate under palladium catalysis, allows 3,6-dimethoxybenzene-1,2-diamine to be isolated as the sole product; this diamine is then converted into 4,7-dimethoxy-2-methyl-1H-benzimidazole, a building block for the preparation of imidazobenzo(hydro)quinones.
在钯催化下,1,4-二甲氧基苯的正二硝基和对二硝基衍生物混合物在乙酸乙酯中发生氢化反应,分离出唯一的产物 3,6-二甲氧基苯-1,2-二胺;然后将该二胺转化为 4,7-二甲氧基-2-甲基-1H-苯并咪唑,这是制备咪唑苯并(氢)醌的基本成分。