【摘要】 十二种4-取代的2-硝基-（二烴胺基乙酰）苯胺(Ⅰ_a-1)在稀醋酸中以次硫酸鈉处理,一步“还原环化”成相应的5-取代的2-二煙胺甲基苯并咪唑(Ⅱ_a-1)。更多还原

【Abstract】 Twelve 5-substituted-2-dialkylaminomethyl benzimidazoles (Ⅱ_a-1) have been synthesized by "reductive cyclization" of the corresponding 4-bromo-, chloro-and methoxy-2-nitro-dialkylaminoacetanilides (Ⅰ_a-1) with sodium hyposulphite in dilute acetic acid.更多还原