The present invention relates to a process for preparing N-substituted 1 H-pyrazole-5-carboxylic acid compounds of the formula l-A and derivatives thereof, in particular the corresponding carbonylchloride compounds (acid chlorides). It also relates to the use of these acid chlorides for preparing anthranilamide derivatives that are useful pesticides. in which the variables are as defined in the claims and the specification comprising the steps of i) reacting a compound of the formula (II) with a base selected from combinations of a magnesium-organic compound having a carbon bound magnesium and a secondary amine and magnesium amides of secondary amines in the presence of a lithium halide, where the base is used in an amount sufficient to achieve at least 80 % deprotonation of the compound of formula (II); and subjecting the product obtained in step (i) to a carboxylation by reacting it with carbon dioxide or a carbon dioxide equivalent, to obtain a magnesium salt of the compound of formula (l-A) and optionally aqueous workup to obtain the compound of the formula (l-A) as a free acid.
本发明涉及一种制备N-取代1H-
吡唑-5-羧酸化合物及其衍
生物的方法,特别是相应的羰基
氯化合物(酸
氯化物)。还涉及使用这些酸
氯化物来制备对昆虫有用的
蒽醯胺衍
生物杀虫剂。其中变量如索赔中所定义和规范中包括以下步骤:i)将式(II)的化合物与选择自具有
碳键
镁的
有机镁化合物和次级胺以及次级胺的
镁酰胺的组合的碱在
锂卤化物存在下反应,其中所述碱的用量足以实现式(II)的化合物至少80%的
脱质子化;并将在步骤(i)中获得的产物经羧化反应,与
二氧化碳或
二氧化碳等效物反应,以获得化合物的
镁盐(l-A)和可选的
水工艺处理以获得化合物的
自由酸形式(l-A)。