Menetelmä farmaseuttisesti arvokkaiden pyridiinijohdannaisten valmistamiseksi

The invention comprises compounds of the general formula wherein R1 or R2 represent identical alkyl radicals, or together with the nitrogen atom, are linked to form a ring which may also contain a further hetero-atom, in particular oxygen, Alk is a straight or branched alkylene chain containing from 1 to 4 carbon atoms, X is a sulphone or sulphoxide radical and Y is a hydrogen or halogen atom or a nitrile group, and their salts and quaternary ammonium compounds. The compounds are prepared by the oxidation of the corresponding compounds of the above general formula wherein X represents a sulphur atom. The free bases thus obtained may be subsequently converted to their salts or quaternary ammonium compounds.