Compounds of the formula ##STR1## wherein R is alkyl having 1-4 carbon atoms; R.sup.1 is alkyl having 1-4 carbon atoms, or alkoxy having 1-4 carbon atoms; R.sup.2 is hydrogen or alkyl having 1-4 carbon atoms; X is oxygen or sulfur; X.sup.1 is oxygen or sulfur and n is 0, 1 or 2 which are useful as insecticides and acaricides.
式为## STR1##的化合物,其中R是具有1-4个碳原子的烷基;R.sup.1是具有1-4个碳原子的烷基或具有1-4个碳原子的烷氧基;R.sup.2是氢或具有1-4个碳原子的烷基;X是氧或
硫;X.sup.1是氧或
硫,n为0,1或2,这些化合物可用作
杀虫剂和
杀螨剂。