A novel 1,3-dithiane of the formula ##STR1## wherein R.sup.1 is a di-substituted amino group; R.sup.2 and R.sup.3 are such that one of them is an electron-withdrawing group with the other being a hydrogen atom, a hydrocarbon group or heterocyclic group of the class consisting of thienyl, triazolyl, and pyridyl, which may optionally be substituted or that R.sup.2 and R.sup.3 taken together with the adjacent carbon atom form a spiro ring provided that at least one of R.sup.2 and R.sup.3 is a carbonyl group; X.sup.1 and X.sup.2 each is a sulfur atom and at least one of X.sup.1 and X.sup.2 may be oxidized, or a salt thereof, possesses very useful pesticidal actions.
一种新型的1,3-二
硫杂环化合物,其
化学式为##STR1## 其中,R.sup.1是二取代
氨基;R.sup.2和R.sup.3是这样的,其中一个是带电子吸引基团,另一个是氢原子、烃基或杂环基团,所述杂环基团属于
噻吩基、三唑基和
吡啶基,可以选择性地被取代,或者R.sup.2和R.sup.3与相邻的碳原子一起形成螺环,前提是R.sup.2和R.sup.3中至少有一个是羰基基团;X.sup.1和X.sup.2各自是
硫原子,其中至少一个可以被氧化,或其盐,具有非常有用的杀虫作用。