The alkyne alkoxycarbonylation to α- or β-substituted acrylates was coupled with the electrocatalytic reduction of CO to CO. The CO-enriched gaseous mixture produced from the electrocatalytic reduction of CO was collected and directly used in the alkyne alkoxycarbonylation. The CO content was found to be critical to the process of carbonylation, and satisfying results were attained by using the gas mixture containing >15 vol % CO. This method offered an efficient but simple CO source from CO electroreduction to the alkoxycarbonylation reaction in two-compartment manner.
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