Certain alkanoyl chloride phenylhydrazones have been found to be active against insects and mites, and also active as herbicides. The phenylhydrazone ring can be substituted. Suitable substituent groups are halogen atoms, the nitro group, the trifluoromethyl group, and alkyl groups of from 1 to 6 carbon atoms, inclusive. The compounds are prepared by reacting an alkanoic acid phenylhy-drazide with phosphorus pentachloride to obtain an alkanoyl chloride (dichlorophosphinyl)phenylhydrazone intermediate that is reacted with phenol to produce the desired alkanoyl chloride phenylhydrazone. Certain compounds can be prepared by direct chlorination of an alkanaldehyde phenylhydrazone. Some of the compounds are novel. Methods of use and compositions are described.
某些酰
氯苯基
肼已被发现对昆虫和螨类具有活性,并且作为
除草剂也具有活性。苯基
肼环可被取代。适当的取代基包括卤素原子、硝基、三
氟甲基和含有1至6个碳原子的烷基。这些化合物是通过将烷酸苯基
肼与
五氯化磷反应制备而成的,以获得一种烷酰
氯(二
氯磷酰)苯基
肼中间体,然后将其与
酚反应以产生所需的烷酰
氯苯基
肼。某些化合物可以通过直接
氯化烷醛苯基
肼来制备。其中一些化合物是新颖的。描述了使用方法和组合物。