ES461515A1 - Procedure for manufacturing 4-amino-5-halogen-piridaz-6-onas (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for manufacturing 4-amino-5-halogen-piridaz-6-onas (Machine-translation by Google Translate, not legally binding)
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Chinoin Private Co Ltd
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Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Zrt
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Publication of ES461515A1publicationCriticalpatent/ES461515A1/en
Process for manufacturing 4-amino-5-halogeno-pyridaz-6-ones-substituted at position 1, of the general formula (see formula i) wherein x is placed per halogen atom and r is set by phenyl, substituted phenyl, heterocycle or substituted heterocycle, of hydrazine derivatives and dihalogenformilacrylic acids, characterized in that hydrazine derivatives of the general formula ii (see formula ii) wherein the meaning of r is the same as above, is formed in a mixture of a solvent apolar and water with an acid a salt, the latter is transformed at 40-90ºC with a 2,3-dihalogeno-3-formylacrylic acid of the general formula (III) (see formula iii) (Machine-translation by Google Translate, not legally binding)
ES0461515A1977-08-101977-08-10Procedure for manufacturing 4-amino-5-halogen-piridaz-6-onas (Machine-translation by Google Translate, not legally binding)
ExpiredES461515A1
(en)
Procedure for the preparation of 6-aminopenicilanico or 7-aminodexacetoxicefalosporanico ácidos derivados. (Machine-translation by Google Translate, not legally binding)
Procedure for the obtaining of derivatives of acids 3,3'triaril-metanodicarboxilicos. (Machine-translation by Google Translate, not legally binding)
A procedure for the preparation of certain esters of acid -1-ethyl-7-methyl-4-oxo-1, 4-dihydro-1, 8-naftiridin-3-carboxylic. (Machine-translation by Google Translate, not legally binding)