Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Laboratorios Made SA
Original Assignee
Laboratorios Made SA
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Publication date
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Priority to ES420969ApriorityCriticalpatent/ES420969A1/es
Publication of ES420969A1publicationCriticalpatent/ES420969A1/es
Pharmaceuticals Containing Other Organic And Inorganic Compounds
(AREA)
Abstract
METODO DE PRODUCCION INDUSTRIAL DEL ACIDO 5-HIDROXIPIRAZOL-3-CARBOXILICO Y SUS DERIVADOS DE FORMULA: **FORMULA**. SE HACE REACCIONAR UN CETOESTER DERIVADO DEL ACIDO OXALACETICO CON HIDRAZINA A UNA TEMPERATURA DE -10 GRADOS C. SE FILTRA LA HIDRAZINA OBTENIDA Y SE TRATA A EBULLICION A REFLUJO PARA SU CICLACION. SE FILTRA EL ESTER CORRESPONDIENTE QUE SE HIDROLIZA CON HC1 PARA DEJAR EN LIBERTAD EL ACIDO QUE SE DESEA OBTENER. ESTE COMPUESTO TIENE INTERES COMO AGENTE HIPOTENSOR, ADRENALITICO Y ANTIULCEROSO.
ES420969A1973-11-291973-11-29Un metodo para la produccion industrial del acido 5-hidro- xipirazol-3-carboxilico.
ExpiredES420969A1
(es)