PROCESS FOR PREPARING A TETRAZOLE-SUBSTITUTED ANTHRANILIC ACID DIAMIDE DERIVATIVE

The present invention relates to a process for preparing a tetrazole-substituted anthranilic acid diamide derivative according to formula (I), in crystalline form, using solvate crystals, with a high degree of purity and yield. The present invention also relates to the preparation of new solvate cry...

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Hauptverfasser: OLENIK Britta, SOWA Michal, BECKMANN Edith, ELIAS Ute, GALLENKAMP Daniel, HAVEKOST Dirk
Format: Patent
Sprache:eng ; spa
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Zusammenfassung:The present invention relates to a process for preparing a tetrazole-substituted anthranilic acid diamide derivative according to formula (I), in crystalline form, using solvate crystals, with a high degree of purity and yield. The present invention also relates to the preparation of new solvate crystals which, by contrast with a tetrazole-substituted anthranilic acid diamide derivative according to the above-mentioned formula (I), in crystalline form, are characterised by improved filtration properties. La presente invención se refiere a un procedimiento para la preparación de un derivado de diamida de ácido antranílico sustituido con tetrazol de la fórmula (I) (ver Fórmula) (I) en forma cristalina, a través de cristales de solvato, con gran pureza y alto rendimiento. La presente invención también se refiere al suministro de nuevos cristales de solvato que se caracterizan por propiedades de filtración mejoradas en comparación con un derivado de diamida de ácido antranílico sustituido con tetrazol según la fórmula anterior (I) en forma cristalina.