Cyclic guanidines. Part 6.1 Synthesis of benzimidazoles by intramolecular vicarious nucleophilic substitution of hydrogen
作者:Franz Esser、Peter Ehrengart、Hans Peter Ignatow
DOI:10.1039/a900553f
日期:——
m-Nitrophenylguanidines, which carry a vicarious leaving group, cyclize under basic conditions yielding nitrobenzimidazoles. Preliminary observations of the regioselectivity of the ring closure reaction are reported.
m-硝基苯基脲基在碱性条件下环化,生成硝基苯并咪唑。报道了环闭反应的区域选择性的初步观察。