Electrochemical oligomerization of sulfonanilides onto copper sheet anodes

Abstract

Methanesulfonanilide and benzenesulfonanilide, salified by a suitable amine were electrolyzed with Cu sheets as anodes in water/organic solvent medium. Coherent insulating coatings on the Cu sheets were thus obtained, which on the basis of various analytical tests resulted to have an oligomeric structure. One electron oxidation of the anilide anions and carbonium-nitrogen coupling of the intermediate free radicals are suggested as the main steps of anilides oligomerization.

An Overview of Phenol Electropolymerization for Metal Protection

“…However, from the beginning, most of the emphasis of this research was laid on the application of the electropolymerization technique to the solution of practical problems of corrosion. Thus, besides the above-quoted patents by McKinney et al (11) and Grace (13), some more patents have been granted to French (46) and Italian institutions (47)(48)(49). However, to our knowledge, no program for the development of the above patents into a practical process has so far been launched.…”