Process For The Preparation Of 1-Alkyl And 1-Aryl-5-pyrazolecarboxylic Acid Derivatives
申请人:PAZENOK Sergii
公开号:US20110152532A1
公开(公告)日:2011-06-23
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,并进一步反应得到1-烷基或1-芳基取代的5-吡唑羧酸衍生物,该衍生物可用作制备杀虫有效的蒽酰胺的有价值中间体。