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Imperial Chemical Industries Ltd
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Imperial Chemical Industries Ltd
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Publication of ES437134A1publicationCriticalpatent/ES437134A1/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Procedure to prepare a 2-aminobenzenesulfonamide, of formula: ** (See formula) ** where R1 is hydrogen, an optionally substituted alkyl radical with up to 12 carbon atoms, cycloalkyl or aryl and R2 is an optionally substituted alkyl radical with 3 to 12 carbon atoms, cycloalkyl or aryl or R1 and R2 together with the atom of Bound nitrogen forms a 5- or 6-membered heterocyclic ring, and ring X may carry other substituents; characterized in that it comprises reacting a 2,2-dinitrodiphenyldisulfide of the formula: ** (See formula) ** in which the X rings can carry other substituents, with an amine of the formula: ** (See formula) ** wherein R1 and R2 are defined as above, at atmospheric pressure and at a temperature of at least 80ºC. (Machine-translation by Google Translate, not legally binding)
ES437134A1974-04-291975-04-29Process for the manufacture of 2-aminobenzenesulphonamides
ExpiredES437134A1
(en)