The present invention relates to a process for preparing haptens for immunoassay of phosphorothioate pesticides, which comprises the steps of reacting O-methyl(ethyl) dichlorothiophosphate with a phenolic compound to obtain O-methyl(ethyl) O-aryl chlorothiophosphate, and reacting the O-(methyl)ethyl O-aryl chlorothiophosphate thus obtained with aminocarboxylic acid to give desired haptens. In accordance with the present invention, haptens having a structure of O-methyl(ethyl) O-aryl, N-(carboxyalkyl)phosphoramidothioate or O-methyl(ethyl) O-aryl N-alkyl-N-(carboxyalkyl)phosphoramidothioate can be simply prepared with a high yield by employing two-step processes in a cost-efficient manner.
本发明涉及一种制备免疫测定
磷酸硫酯类杀虫剂半抗原的方法,包括以下步骤:将O-
甲基(乙基)二
氯代
硫酯与
酚类化合物反应,得到O-
甲基(乙基)O-芳基
氯代
硫酯,然后将得到的O-(
甲基)乙基O-芳基
氯代
硫酯与
氨基
羧酸反应,得到所需的半抗原。根据本发明,通过采用成本效益高的两步法,可以简单地制备具有O-
甲基(乙基)O-芳基、N-羧基烷基
磷酰
氨基
硫酸酯或O-
甲基(乙基)O-芳基N-烷基-N-羧基
磷酰
氨基
硫酸酯结构的半抗原,并且具有高产率。