5-Substituted-2,4-diaminopyrimidines, and agriculturally acceptable salts thereof, when present in insecticidally or acaricidally effective amounts, and with a suitable agricultural carrier, are useful as active ingredients in novel insecticidal and acaricidal compositions. These pyrimidines may be represented by the following formula: ##STR1## wherein Ar is ##STR2## and wherein U is an alkenylene or alkynylene moiety, and R, R.sup.1, R.sup.2, R.sup.3, R.sup.4, V, W, X, Y, Z and n are as defined herein; also disclosed and claimed are novel intermediates thereof.
5-取代的
2,4-二
氨基嘧啶及其农业可接受盐,当以杀虫或杀螨有效量存在时,并与适当的农业载体一起使用,可用作新型杀虫和杀螨组合物中的活性成分。这些
嘧啶可以用以下式子表示:##
STR1## 其中Ar是##
STR2## 且U是
烯烃基或
炔烃基,而R,R.sup.1,R.sup.2,R.sup.3,R.sup.4,V,W,X,Y,Z和n的定义如此处所述;还披露和声明了其新型
中间体。