A new class of herbicidal compounds consisting of N'-(substituted-5-isothiazolyl)-N,N-dimethylformamidines in which the 3-substituent on the isothiazole moiety consists of alkyl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkylamino and dialkylamino, and the 4-substituent on the isothiazole moiety consists of cyano, carbamoyl, and nitro, and in which the hydrogen of the dimethylformamidine moiety may be substituted by fluorine, chlorine, bromine, or carbonitrile, exhibits preemergence and postemergence herbicidal activity, controlling effectively the growth of a wide spectrum of grassy and broad-leaved plant species. The synthesis of members of this class is described in detail, and the utility of representative compounds is exemplified.
一种新的
除草剂化合物类别,由N'-(取代-5-
异噻唑基)-
N,N-二甲基甲酰胺组成,在
异噻唑基上的3-取代基包括烷基、烷氧基、烷
硫基、烷基亚砜基、烷基磺酰基、烷基
氨基和二烷基
氨基,而在
异噻唑基上的4-取代基包括
氰基、
氨基甲酰基和硝基,而且二甲基甲酰胺基团的氢原子可以被
氟、
氯、
溴或
氰基取代,表现出萌发前和萌发后的除草活性,有效控制了广谱草本和阔叶植物的生长。详细描述了该类成员的合成,并且举例说明了代表性化合物的实用性。