Vinyl phosphoric esters of the following formula are effective in the control of insects and acarids: ##STR1## wherein R.sub.1 is lower alkoxy; R.sub.2 is selected from lower alkoxy and lower thioalkyl; R.sub.3 is selected from lower alkyl, phenyl, and halophenyl; R.sub.4 is selected from hydrogen, lower alkyl, halogen, and lower thioalkyl; V is selected from hydrogen, halogen, lower alkyl, lower alkoxy, lower haloalkyl, amino, mono and dialkyl substituted amino, lower alkoxy carbonyl, lower thioalkyl, lower alkyl sulfonyl, nitro, and phenyl; W is oxygen or sulfur; Y is halogen; m is 0-2; and n is 0-2.
以下
化学式的
乙烯基磷酸酯对昆虫和螨虫的控制具有有效性:##STR1## 其中,R.sub.1为较低的烷氧基;R.sub.2选自较低的烷氧基和较低的
硫代烷基;R.sub.3选自较低的烷基、苯基和卤代苯基;R.sub.4选自氢、较低的烷基、卤素和较低的
硫代烷基;V选自氢、卤素、较低的烷基、较低的烷氧基、较低的卤代烷基、
氨基、单烷基和二烷基取代
氨基、较低的烷氧羰基、较低的
硫代烷基、较低的烷基磺酰基、硝基和苯基;W为氧或
硫;Y为卤素;m为0-2;n为0-2。