作者:Zhengyi Li、Yuan Chen、Yue Yin、Zhiming Wang、Xiaoqiang Sun
DOI:10.3184/174751916x14760947474916
日期:2016.11
and convenient two-step method has been developed and used to synthesise 25 (4 of which are novel) unsymmetrical N,N′-disubstituted thioureas in water. Alkylamines or variously substituted arylamines reacted smoothly with phenyl chlorothionoformate at room temperature to form thiocarbamates, which were then reacted with another alkyl- or arylamine in water at reflux to afford the unsymmetrical N,N′-disubstituted
已经开发出一种简单方便的两步法,用于在水中合成 25 种(其中 4 种是新型的)不对称 N,N'-二取代硫脲。烷基胺或各种取代的芳胺在室温下与氯硫代甲酸苯酯顺利反应形成硫代氨基甲酸酯,然后在回流水中与另一种烷基或芳基胺反应,得到不对称的 N,N'-二取代硫脲,产率良好至极好。该方法的主要优点是条件温和、后处理简单、收率高以及使用水作为溶剂。