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Abbott GmbH and Co KG
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Knoll GmbH
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Publication of ES211201A1publicationCriticalpatent/ES211201A1/es
Procedimiento para la preparación de 1 4-difenil-3 5-diquetopirazolidina y de sus derivado sen la cual significa R1 hidrógeno alkilo arilo o aralkilo y R2 hidrógeno alkilo o aralkilo respectivamente sus sales con bases anorgánicas o orgánicas marcado de tal manera que se condensa ácido fenilmalónico sus ésteres dialkilicos amidoésteres o dihalogenuros con fenilhidrazide o con sus derivados β-alkilo-sustituídos y que - si se desea - se haga actuar sobre la 1 4-difenil-3 5-diquetopirazolidina obtenida alkilo- o aralkilo-halogenuros en presencia de medios alcalinos.
ES0211201A1952-09-181953-09-10PROCEDIMIENTO PARA LA PREPARACIoN DE 1, 4-DIFENIL-3, 5-DIQUETOPIRAZOLIDINA Y SUS DERIVADOS
ExpiredES211201A1
(es)