The present invention relates to a process for the preparation of 1-alkyl- or 1-aryl-substituted 5-pyrazolecarboxylic acid derivatives comprising the reaction of substituted 1,3-dioxolanes and 1,4-dioxanes with alkyl- or arylhydrazines to give 1-alkyl- or 1-aryl-substituted dihydro-1H-pyrazoles, and their further reaction to give 1-alkyl- or 1-aryl-substituted 5-pyrazolecarboxylic acid derivatives, which can be used as valuable intermediates for producing insecticidally effective anthranilamides.
本发明涉及一种制备1-烷基或1-芳基取代的5-
吡唑羧酸衍
生物的方法,包括将取代的1,3-二氧兰和1,4-二氧兰与烷基或芳基
肼反应,得到1-烷基或1-芳基取代的二氢-1H-
吡唑烷,然后进一步反应得到1-烷基或1-芳基取代的5-
吡唑羧酸衍
生物,可用作生产杀虫有效的
蒽酰胺的有价值的中间体。