New synthesis of sulphides from vinylic ethers. Application to the syntheses of 3-alkylsulphenyl-, 3-alkylsulphinyl- and 3-alkylsulphonyl-piperidinium chlorides

Abstract

A synthesis of 3-alkylsulphenyl-, 3-alkylsulphinyl- and 3-alkylsulphonyl-1-methylpiperidinium hydrochlorides has been carried out starting from 3-hydroxypyridine and alkanethiols. These piperidyl derivatives described herein are monoconformational compounds in solution and their magnetic parameters can be used as reference standards for the conformational analysis of related cyclic and acyclic compounds with sulphur and nitrogen heteroatoms in a 1,3-relationship.