应用乙基二硫化磷可制取O-烷基乙基二硫代膦酸酯;从而可以进行此类杀虫剂的合成.G.Schrader先后合成S,S-(3,4二氯苯基)三硫代乙基膦酸酯及S-乙基S-乙硫乙基三硫代甲基膦酸酯,生物试验证明它们是很好的杀虫剂,且对温血动物毒性低.我们对乙基三硫代膦酸酯的制备进行了一些试验,最后以乙基三硫代膦酸铵和N-取代α-氯代乙酰胺反应,制取S-烷基S-(N-取代氨基羰甲基)乙基三硫代膦酸酯. O-alkyl ethyl dithiophosphonates can be prepared using ethyl phosphorous disulfide; thus allowing the synthesis of such insecticides. G. Schrader synthesized S, S- (3,4-dichlorophenyl ) Trithioethyl phosphonates and S-ethyl S-ethylthioethyl trithiomethyl phosphonates, biological tests prove they are good insecticides, and low toxicity to warm-blooded animals. We Some experiments were carried out on the preparation of ethyl trithiophosphonate. Finally, S-alkyl S- (N-substituted) was reacted with ammonium ethyl trithiophosphonate and N-substituted α-chloroacetamide Aminocarbonylmethyl) ethyl trithiophosphonate.