Treatment of the salt generated from 2,4,4,6-tetrabromo-2,5-cyclohexadienone and PPh3 in a mixed solvent of with primary and secondary alcohols in the presence of Zn(N3)2·2Py led to azides in excellent yields with inversion of configuration. Addition of hexamethylphosphorictriamide considerably accelerated the reaction.
在Zn(N 3)2 ·2Py的存在下,在与伯醇和仲醇的混合溶剂中处理2,4,4,6-四
溴-2,5-环己二酮和PPh 3生成的盐会导致
叠氮化物在通过反转配置获得出色的产量。六甲基
磷酸三酰胺的加入大大加速了反应。