Process for preparation of tetrazole-substituted anthranilic acid diamide derivatives

The present invention relates to a process for preparing tetrazole-substituted anthranilic acid diamide derivatives of formula (I) in crystalline form with high purity and high yield using solvate crystals. The invention also relates to the production of novel solvate crystals, characterized in that they have improved filtration properties compared to the tetrazole-substituted anthranilic acid diamide derivatives according to the above formula (I) in crystalline form. 本发明涉及一种使用溶剂化物晶体以高纯度和高收率制备结晶形式的式(I)的四唑取代的邻氨基苯甲酸二酰胺衍生物的方法。本发明还涉及新的溶剂化物晶体的制备，其特征在于，其与结晶形式的根据上述式(I)的四唑取代的邻氨基苯甲酸二酰胺衍生物相比具有改善的过滤性质。