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Novartis AG
Original Assignee
Ciba Geigy AG
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Publication date
Application filed by Ciba Geigy AGfiledCriticalCiba Geigy AG
Priority to ES0246549ApriorityCriticalpatent/ES246549A1/es
Publication of ES246549A1publicationCriticalpatent/ES246549A1/es
Low-Molecular Organic Synthesis Reactions Using Catalysts
(AREA)
Cephalosporin Compounds
(AREA)
Abstract
Procedimiento para la preparación de compuestos de 25-di(bencimidacil-(2)) furano mediante transposición de o-diaminobencenos de los que un grupo amino es primario y el otro grupo amino a lo sumo secundariocon ácido furan "5-di-carboxílico en mdio anhidropreferentemente en presencia de una reducida cantidad de ácido bóricocaracterizado porque la transposición es llevada a cabo a temperaturas de por lo menos 190º.
ES0246549A1959-01-131959-01-13Procedimiento para la preparaciën de compuestos de 2,5-di-[bencimidacil(2')]-furano
ExpiredES246549A1
(es)