An efficient method for the Lossen rearrangement that uses 2,4,6-trichloro-1,3,5-triazine (TCT) as a promoter is reported. This procedure allowed the preparation of various carbamates, thiocarbamates, and ureas in good yields directly from the corresponding hydroxamic acids.
报告了一种有效的Lossen重排方法,该方法使用2,4,6-三
氯-
1,3,5-三嗪(TCT)作为启动子。该方法允许直接从相应的异羟
肟酸制备高产率的各种
氨基甲酸酯,
硫代
氨基甲酸酯和
脲。