The cobalt-catalyzed carboxylation of propargyl acetates with CO2 (1 atm) is described. The reaction proceeds at room temperature in the presence of Mn powder as a reducing reagent. Various propargyl acetates are converted to the corresponding carboxylic acids in good to high yields.
K. Nogi, T. Fujihara, J. Terao and Y. Tsuji, Chem. Commun., 2014, 50, 13052 DOI: 10.1039/C4CC03644A
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