Electrosynthesis of S -thiocarbamates with disulfides as a sulfur source.

An electrochemical oxidative synthesis of S -thiocarbamates by a carbamothioation reaction via a three-component coupling reaction (disulfide, water and isocyanide) is developed, which avoids the use of external oxidants and generates only hydrogen gas as the by-product. With NH 4 I as the mediator and electrolyte, the desired S -thiocarbamates were obtained in good yields in an undivided cell at room temperature.