Hydroxy-4-benzenethio derivatives, their preparation as well as their use for the preparation of aminoalkoxybenzenesulfonyle derivatives.

摘要

The subject of the invention is 4-hydroxybenzenethio (4-hydroxyphenylthio) derivatives of general formula <IMAGE> in which: R1 and R2, which are identical or different, each represent hydrogen, the methyl or ethyl radical or a halogen atom, R represents a C1-C6 alkyl, C3-C6 cycloalkyl or phenyl radical, R3 represents hydrogen or a halogen atom, X represents -O-, -S- or <IMAGE> in which R4 represents hydrogen or a C1-C4 alkyl group, useful as synthetic intermediates, especially for the preparation of aminoalkoxybenzenesulphonyl (aminoalkoxyphenylsulphonyl) derivatives which are pharmaceutically active compounds.