The invention provides compounds of formula (I) having nematicidal, insecticidal, acaricidal and fungicidal properties, compositions comprising them and processes and intermediates for their preparation: ##STR1## wherein: X is oxygen or sulphur; n is 0, 1 or 2; R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are as described in the specification.
该发明提供具有杀线虫、杀虫、杀螨和杀菌性质的公式(I)化合物,包含它们的组合物以及它们的制备过程和中间体:##STR1## 其中:X是氧或
硫;n是0、1或2;R.sup.1、R.sup.2、R.sup.3和R.sup.4如说明书中所描述。