Improved Procedures for the Preparation of Cycloalkyl-, Arylalkyl-, and Arylthioureas
作者:C. R. Rasmussen、F. J. Villani, Jr.、L. E. Weaner、B. E. Reynolds、A. R. Hood、L. R. Hecker、S. O. Nortey、A. Hanslin、M. J. Costanzo、E. T. Powell、A. J. Molinari
DOI:10.1055/s-1988-27605
日期:——
An improved procedure for the preparation of arylthioureas consists of the reaction of benzoyl isothiocyanate with anilines in acetone and debenzoylation of the resultant N-aryl-N′-benzoylthioureas with 5% aqueous sodium hydroxide. Bicycloalkylthioureas and N-(arylalkyl)thioureas (e.g., 9H-9-fluorenylthiourea) are directly prepared from the corresponding isothiocyanates and ammonia.
制备芳基
硫脲的改进方法包括将苯甲酰异
硫氰酸酯与
苯胺在
丙酮中反应,然后用5%
氢氧化钠水溶液对生成的N-芳基-N'-苯甲酰
硫脲进行去苯甲酰化。双环烷基
硫脲和N-(芳烷基)
硫脲(例如9H-9-
芴基
硫脲)可直接由相应的异
硫氰酸酯与
氨反应制备。