Base mediated cyclization of enamines derived from condensation of 2-nitroanilines with α-branched aldehydes, in the presence of an electrophile, affords N-alkoxy-substituted benzimidazoles with or without an oxygenate side chain in the 2-position.
在亲电子试剂的存在下,碱介导的由
2-硝基苯胺与α-支化醛缩合衍生的烯胺的环化,可得到在2-位带有或不带有氧化侧链的N-烷氧基取代的
苯并咪唑。