ES263561A1 - A procedure for the preparation of 3-metoxy-6-sulfanil-amidopiridazine (Machine-translation by Google Translate, not legally binding)
- Google Patents
A procedure for the preparation of 3-metoxy-6-sulfanil-amidopiridazine (Machine-translation by Google Translate, not legally binding)
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Spofa Sdruzeni Podniku Pro Zdravotnickou Vyrobu
Spofa Vereinigte Pharma Werke
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Spofa Sdruzeni Podniku Pro Zdravotnickou Vyrobu
Spofa Vereinigte Pharma Werke
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Publication of ES263561A1publicationCriticalpatent/ES263561A1/en
Low-Molecular Organic Synthesis Reactions Using Catalysts
(AREA)
Agricultural Chemicals And Associated Chemicals
(AREA)
Abstract
A process for the preparation of 3-methoxy-6-sulfanilamidopyridazine, starting from 3-chloro-6-aminopyridazine, characterized in that 3-chloro-6-aminopyridazine is first reacted with p-acetamidobenzene sulfochloride in pyridine medium. A temperature of 60 to 80º c, after which pyridine is evaporated and the evaporation residue is subjected to methoxylation, as well as to simultaneous deacetylation by the action of sodium methylate in methyl alcohol at a temperature of 120 to 140º c. (Machine-translation by Google Translate, not legally binding)
ES0263561A1959-12-241960-12-24A procedure for the preparation of 3-metoxy-6-sulfanil-amidopiridazine (Machine-translation by Google Translate, not legally binding)
ExpiredES263561A1
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