Elektroreduktion organischer Verbindungen, 13. Coelektroreduktion von Dithiocarbonsäureestern mit Halogenaromaten

Electroreduction of Organic Compounds, 13. – Coelectroreduction of Methyl Dithiocarboxylates with Halogenoarenes Coelectroreduction of methyl dithiopivalate ( 1 ) or dithiobenzoate ( 11 ) with a monohalogenobenzene does not result in any characteristic products. However, the aryl methyl dithioacetals 7 and 8 are formed on cathodic reduction of 1 in the presence of the o ‐dihalogenobenzenes 4 and 5 , respectively. – An S N Ar mechanism is proposed, which is also in accordance with the formation of 2‐bromobenzenethiolate ( 9 ) from 1 and 4 or 5 .