Abstract
Electrochemical Carboxylation of Cinnamoyl‐1,1‐bis(alkylthio)ethylenesCinnamoyl‐1,1‐bis(alkylthio)ethylenes (1a–1h) are reduced electrochemically in the presence of carbondioxide in aprotic media. The attack of CO2 takes place either in 1‐ or 5‐position of cinnamoyl‐1, 1‐bis(alkylthio)ethylenes (1a–1h) depending on the nature of the aryl substituents. If CO2 reacts in position 1 carbonic acids 3 are obtained, reaction of carbondioxide in 5‐ position leads to the acids 2. The effects of different aryl substituents on the halfwave potentials and the preparative electrolyses have been investigated.
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