Certain new 1-(substituted-hydrocarbyl)-di- and trihalopyrazoles have been synthesized. They possess herbicidal and plant growth regulatory activity. The hydrocarbyl group, i.e., alkylene or alkenylene group at the 1-nitrogen of the pyrazole nucleus has either a carboxyl group, an hydroxymethyl group, an hydroxymethyl lower-alkanoate group a carboxylic lower-alkyl ester group a cyano group or a carboxylic amide group. The new compounds are prepared and isolated by conventional chemical reactions and procedures. An improved reaction for making the new carboxylic acids is described. Weed control methods and compositions for herbicidal use are also described.
已经合成了某些新的1-(取代烃基)-二和三卤代
吡唑。它们具有除草和植物生长调节活性。在
吡唑核的1-氮上的烃基,即烷基或烯基,具有羧基、羟甲基、羟甲基低烷酸酯基、
羧酸低烷基酯基、
氰基或
羧酸酰胺基。新的化合物通过传统的
化学反应和程序制备和分离。还描述了制备新的
羧酸的改进反应。还描述了用于除草用途的除草方法和组合物。