conditions. With this concept, various amines have been selectively dehydrogenated to the
corresponding imines in the presence of different functional groups such as nitrile, nitro,
ester, halogen, ether, thioether, and carbonyl or carboxylic acid moieties. At the end, the
CO2-catalyzed synthesis of pharmaceutical drugs has been achieved. The CO2 radical has
been detected by EPR spectroscopy using DMPO, and the mechanism of this reaction is …