ELECTROCARBOXYLATION OF ORGANIC COMPOUNDS WITH CARBON DIOXIDE CATALYZED BY METALLOPORPHYRINS(Ⅰ)——CATALYTIC ACTIVITIES OF METALLOPORPHYRINS FOR ELECTROCARBOXYLATION OF BENZYL CHLORIDE

The electrocarboxylation of benzyl chloride with CO_2 catalyzed by metalloporphyrins and the effects of different kinds of central metals and ligands on catalytic activities are reported. These metalloporphyrins whose central metals can form corresponding M (Ⅰ) complexes such as CoTPP, FeTPP have high activities. With water-soluble porphyrin ligands such as TPPS, TTMAPI, the corresponding metalloporphyrins have high catalytic activity. Electron-with-drawing groups on the porphyrin ring cause the lowering of activity.