Rapid Synthesis of<i>N</i>-Acyl Ureas from Their Thio Analogues Using Wet Silica-Supported Permanganate Under Solvent-Free Conditions
作者:Zheng Li、Jin-Lan Yu、Sheng-Yi Shi、Wei Zhu
DOI:10.1080/10426500500272343
日期:2006.6
A rapid method to N-acyl ureas from corresponding N-acyl thioureas is described. N-coumaroyl-N′-arylthioureas, which are easily prepared by the reaction of coumarin-3-carboxylic acid chloride with potassium thiocyanate and arylamines, can be expeditiously transformed into corresponding N-acyl ureas via r.t. grinding with wet silica supported potassium permanganate under solvent-free conditions in an
描述了从相应的 N-酰基硫脲中快速提取 N-酰基脲的方法。N-香豆酰-N'-芳基硫脲是由香豆素-3-甲酰氯与硫氰酸钾和芳胺反应容易制备的,可以通过用湿法二氧化硅负载的高锰酸钾在室温下快速研磨转化为相应的N-酰基脲。无溶剂条件下,产率极好。