Patent ES-8306107-A1 (ES)
Title: N-substituted 2,4-dialkoxybenzene sulfon amides.
IPC: C07C67/00
Filed: 1982-04-22
Abstract: 1. Claims for the Contracting States : BE, CH, DE, GB, IT, LI, LU, NL, SE Compounds corresponding to the general formula (I) : see diagramm : EP0064445,P19,F2 in which : n and m, independently from each other, have values from 0 to 4 R3 and R4 each represent, independently from each other, a lower alkyl radical having from 1 to 4 carbon atoms R1 and R2 represent, independently from each other, hydrogen atoms, linear or branched alkyl groups having from 1 to 4 carbon atoms, or forming conjointly with the nitrogen atom a nitrogenous heterocyclic group with 5 or 6 links, particularly a pyrrolidino, morpholino, piperazinyl, pyrrole or piperidino group, substituted or not by linear or branched alkyl radicals having from 1 to 4 carbon atoms R5 represents a hydrogen atom, a halogen, the group NO2 , NH2 or CF3 , an alkoxy radical having from 1 to 4 carbon atoms, or an alkyl sulfonyl radical having from 1 to 4 carbon atoms, and R6 and R7 represent, independently from each other, a hydrogen atom, an alkyl radical with 1 to 6 carbon atoms or a cycloalkyl radical with 3 to 6 carbon atoms, as well as their salts obtained with physiologically acceptable organic or inorganic acids. 1. Claims for the Contracting State : AT Process for preparing the hydrochlorides of the compounds of general formula (I) : see diagramm : EP0064445,P21,F3 in which : n and m, independently from each other, have the values from 0 to 4 R3 and R4 each represents, independently from each other, an alkyl radical having from 1 to 4 carbon atoms R1 and R2 represent, independently from each other, hydrogen atoms, linear or branched alkyl groups having from 1 to 4 carbon atoms, or forming conjointly with the nitrogen atom a nirogenous heterocyclic group with 5 or 6 links, particularly a pyrrolidino, morpholino, piperazinyl, pyrrole or piperidino group, substituted or not by linear or branched alkyl radicals having from 1 to 4 carbon atoms R5 represents a hydrogen atom, a halogen, the NO2 , NH2 or CF3 group, an alkoxy radical having from 1 to 4 carbon atoms or an alkylsulfonyl radical having from 1 to 4 carbon atoms, and R6 and R7 represent, independently from each other, a hydrogen atom, an alkyl radical having from 1 to 6 carbon atoms or a cycloalkyl radical having from 3 to 6 carbon atoms, as well as their salts obtained with physiologically acceptable organic or inorganic acids, comprising reacting an amine of formula (XI) : see diagramm : EP0064445,P21,F1 in which : n and m, independently from each other, have values from 1 to 4 R1 and R2 represent, independently form each other, hydrogen atoms, linear or branched alkyl groups having from 1 to 4 carbon atoms, or forming conjointly with the nitrogen atom a nitrogenous heterocyclic group with 5 or 6 links, particularly a pyrrolidino, morpholino, piperazinyl, pyrrole or piperidino group, substituted or not by linear or branched alkyl radicals having from 1 to 4 carbon atoms, and R6 and R7 represent, independently from each other, a hydrogen atom, an alkyl radical having from 1 to 6 carbon atoms or a cycloalkyl radical having from 3 to 6 carbon atoms, with a sulfochloride of formula (V) : see diagramm : EP0064445,P21,F2 in which : R3 and R4 each represents, independently from each other, a lower alkyl radical having from 1 to 4 carbon atoms, and A has the same meaning as R5 , with the exception of NH2 , followed, if necessary, by a reduction when A represents the NO2 group.