This invention pertains to novel processes for preparing phosphorus derivatives of aminothiomethylcarbamates using as intermediates corresponding phosphorus derivatives of aminothiocarbamic halides. The carbamates are useful as pesticides against insects, mites, and nematodes. Two processes for preparing the corresponding intermediates are described. One preparation generally reacts an appropriate N-chlorothiophosphoramide with N-methylcarbamoyl halide. The other preparation generally reacts an N-chlorothiomethylcarbamoyl halide with an appropriate phosphoramide. The intermediate will react with various alcohols to produce the desired carbamates in the process of the invention.
本发明涉及使用相应的
氨基
硫代
氨基卡巴酸酯的
磷衍
生物作为中间体,制备
磷衍
生物的新工艺。这些卡巴酸酯可用作
杀虫剂,用于对抗昆虫、螨和线虫。文中描述了两种制备相应中间体的方法。一种制备通常是将适当的N-
氯硫代
磷酰胺与N-甲基
氨基甲
酰卤代烃反应。另一种制备通常是将N-
氯硫代甲基卡巴
酰卤代烃与适当的
磷酰胺反应。在本发明的过程中,中间体将与各种醇反应,产生所需的卡巴酸酯。