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.
一种新的除草化合物类别,由N'-(取代的5-
异噻唑基)-
N,N-二甲基甲酰胺组成,其中
异噻唑基上的3-取代基包括烷基,烷氧基,烷
硫基,烷基磺酰基,烷基亚磺酰基,烷基
氨基和双烷基
氨基,而
异噻唑基上的4-取代基包括
氰基,
氨基甲酰基和硝基,而二甲基甲酰胺基团上的氢原子可能被
氟,
氯,
溴或
氰取代,表现出萌芽前和萌芽后的除草活性,有效控制了广泛范围的草本和阔叶植物物种的生长。详细介绍了该类成员的合成,并举例说明了代表性化合物的实用性。