Characterisation of magnesium carboxylates and their catalytic C–C bond formation reactions

Condensation reactions of aromatic aldehydes with acetone for carbon–carbon bond formation are catalysed by magnesium carboxylate complexes. Two magnesium complexes having compositions [(4-NO2-C6H4CO2)2Mg(CH3OH)4] (1) and [(4-CH3-C6H4CO2)2Mg(CH3OH)2(H2O)2] (2) that are catalysts for such reactions are synthesized. They are prepared by reacting metallic magnesium with methanol in the presence of 4-nitrobenzoic acid and 4-methylbenzoic acid, respectively. Structures of 1 and 2 are determined by X-ray crystallography. The catalytic reactions of these two complexes for carbon–carbon bond formation reactions of various aromatic aldehydes with acetone are presented.

Two magnesium (II) benzoate complexes are prepared by reacting magnesium with methanol in the presence of corresponding benzoic acids. These complexes are moderate catalysts for carbon–carbon bond formation between aromatic aldehydes and acetone. Characterization of these complexes and their role as catalysts for condensation reactions of acetone with different aldehydes are presented.Figure optionsDownload as PowerPoint slide