A novel 1,3-dithiane of the formula
wherein R' is a di-substituted amino group; R2 and R3 are such that one of them is an electron-withdrawing group with the other being a hydrogen atom, a hydrocarbon group or heterocyclic group which may optionally be substituted or that R2 and R3 taken together with the adjacent carbon atom form a spiro ring provided that at least one of R2 and R3 is a carbonyl group; X' and X2 each is a sulfur atom and at least one of X' and X2 may be oxidized, or a salt thereof, posesses very useful pesticidal actions.
一种新型
1,3-二噻烷,其式如下
其中,R'是二取代的
氨基;R2 和 R3 中的一个是抽电子基团,另一个是氢原子、烃基或杂环基团,可选择被取代,或者 R2 和 R3 与相邻的碳原子一起形成螺环,条件是 R2 和 R3 中至少有一个是羰基;X'和 X2 各为一个
硫原子,X'和 X2 中至少有一个可被氧化,或其盐具有非常有用的杀虫作用。