An efficient method for converting alcohols to azides with 2,4,4,6-tetrabromo-2,5-cyclohexadienone/PPh3/Zn(N3)2·2Py
作者:Akiko Saito、Kazumi Saito、Akira Tanaka、Takayuki Oritani
DOI:10.1016/s0040-4039(97)00788-0
日期:1997.6
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。