The invention is concerned with novel heterocyclic compounds of the formula ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are as hereinafter set forth, and their acid addition salts, processes for the preparation of these compounds, pest control compositions which contain these compounds as the active substance, as well as the methods of use of such compounds or compositions for the control of pests.
这项发明涉及公式为##STR1##的新颖
杂环化合物,其中R.sup.1、R.sup.2和R.sup.3如下所述,以及它们的酸盐,制备这些化合物的方法,含有这些化合物作为活性物质的
杀虫剂配方,以及利用这些化合物或配方控制害虫的方法。