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Bayer AG
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Bayer AG
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Publication of ES268768A1publicationCriticalpatent/ES268768A1/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
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Catalysts
(AREA)
Low-Molecular Organic Synthesis Reactions Using Catalysts
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Abstract
Process for obtaining sulfonamides, characterized in that the products of the reaction according to Vilsmeier of acetalkydiacetaldehyde acetals or 1,2-dialkoxyethylenes with N, N-disubstituted formamides and inorganic acid chlorides are condensed with p-aminobenzolsulfonylguanidine, p-acylaminobenzolsulfonylguanidine or p -nitrobenzolsulfonylguanidine in the presence of basic condensation media and the group in the p-position is transformed into the amine group, if appropriate by hydrolysis or reduction. (Machine-translation by Google Translate, not legally binding)
ES0268768A1960-07-141961-07-04Procedure for the obtaining of sulfonamides (Machine-translation by Google Translate, not legally binding)
ExpiredES268768A1
(en)
A procedure for the obtaining of melamine from urea and its products of thermal decomposition (Machine-translation by Google Translate, not legally binding)
Procedure for the preparation of urea inclusion compounds based on perdicarboxylic acids (Machine-translation by Google Translate, not legally binding)