(9) with diazomethane afforded 2-diazo-1-(1-memyl-5-nitro-2-imidazolyl)ethanone (10). Successive rearrangement of compound 10 via Arndt-Eastert rearrangement yielded 1-memyl-5-mtroimidazole-2-acetic acid (1), which was converted to its corresponding methyl ester 11 with etheral solution of diazomethane.
1-甲基-5-硝基咪唑-2-羧基
氯化物(9)与
重氮甲烷反应,得到2-重氮-1-(1-甲基-5-硝基-2-
咪唑基)乙酮(10)。经由Arndt-Eastert重排的化合物10的 连续重排产生了1-甲基-5-甲基
咪唑-2-
乙酸(1),将其用
重氮甲烷的醚溶液转化为其相应的甲酯11。