Organo-phosphoric esters, their production and use as pesticides, as well as the intermediates thereof and their production
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0015078A2
公开(公告)日:1980-09-03
Phosphoro-thioate or dithioate compounds of the formula (I),
wherein R is a C1 - C3 alkyl group, R1 is a C, - C3 alkoxy, C1 - C4 alkylamino or allylamino group, R2 is a halogen atom, a C1-C4 alkoxy or C1-C3 alkyl group, R3 is a hydrogen or halogen atom or a C, - C3 alkyl group, R4 is a C1 - C3 alkyl group, and X is an oxygen or sulfur atom, provided that when R1 is a C1 - C4 alkylamino or allylamino group, X is an oxygen atom, are useful insecticides, acaricides and/or nematocides. Such a compound can be prepared by condensing a pyrimidine of the formula (II),
wherein Y is a halogen atom, and R2, R3 and R. are as defined above, with a thio- or dithio-ohosphate of the formula,
wherein M is an alkali metal atom or an ammonium group, and R, R, and X are as defined above. The intermediate pyrimidine compound of the formula (II) can, when R2 is a halogen atom or a C, - C4 alkoxy group, be prepared by halogenation or alkoxylation respectively of the corresponding hydroxy compound and this hydroxy compound can be prepared by reacting an acetamidine hydrochloride with a β-ketoester.
式(I)的硫代磷酸酯或二硫代磷酸酯化合物、
其中 R 是 C1 - C3 烷基,R1 是 C, - C3 烷氧基、C1 - C4 烷基氨基或烯丙基氨基,R2 是卤素原子、C1-C4 烷氧基或 C1-C3 烷基,R3 是氢原子或卤素原子或 C, - C3 烷基,R4 是 C1 - C3 烷基,X 是氧原子或硫原子,但当 R1 是 C1 - C4 烷基氨基或烯丙基氨基时,X 是氧原子,这些化合物是有用的杀虫剂、杀螨剂和/或杀线虫剂。这种化合物可以通过缩合式 (II) 的嘧啶来制备、
式中 Y 是卤素原子,R2、R3 和 R. 如上定义,与式中硫代或二硫代磷酸盐缩合、
其中 M 为碱金属原子或铵基团,R、R 和 X 如上文所定义。当 R2 为卤素原子或 C, - C4 烷氧基时,式(II)的中间嘧啶化合物可分别通过相应的羟基化合物的卤化或烷氧基化来制备,该羟基化合物可通过乙脒盐酸盐与 β-酮酯反应来制备。