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Hoechst AG
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Hoechst AG
Farbwerke Hoechst AG
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Application filed by Hoechst AG, Farbwerke Hoechst AGfiledCriticalHoechst AG
Priority to ES0242070ApriorityCriticalpatent/ES242070A1/en
Publication of ES242070A1publicationCriticalpatent/ES242070A1/en
Low-Molecular Organic Synthesis Reactions Using Catalysts
(AREA)
Abstract
Process for obtaining sulfonylureas of the general formula R - SO2 - NH - CO - NH - CO - R1 where R means a phenyl radical, in which one or two hydrogen atoms can be substituted by alkyl or alkoxy radicals, the alkyl group of which contains at most 8 carbon atoms, or by halogens a naphthyl radical or 5,6,7, 8-tetrahydronaphthyl or an aliphatic or cycloaliphatic hydrocarbon radical with at most 8 carbon atoms, and R 1 represents a hydrocarbon radical, characterized in that it is reacted in the presence of sulfonylureas catalysts of the formula R - SO2 - NH - CO - NH2, where R has the indicated meaning, with an excess of anhydrides of carboxylic acids or respectively with mixed anhydrides of carboxylic acids or halides of carboxylic acids. (Machine-translation by Google Translate, not legally binding)
ES0242070A1958-05-241958-05-24Procedure for the obtaining of N-sulfonil-n'-acilureas (Machine-translation by Google Translate, not legally binding)
ExpiredES242070A1
(en)
Procedure for the obtaining of new esters 1-alkyl-4-piperidilic O-substitute benzoic acids (Machine-translation by Google Translate, not legally binding)
Procedure for polymerization of a polymerizable liquid containing a vinyl-arilo compound. (Machine-translation by Google Translate, not legally binding)
Procedure for the obtaining of dialylamide from the 3-chloropiridazon- (6) -1-acetic acid. (Machine-translation by Google Translate, not legally binding)
Procedure for the manufacture of derivatives of the 1-bencil tetrahidroisoquinolina basically replaced (Machine-translation by Google Translate, not legally binding)