Mixed Tishchenko Reaction over Solid Base Catalysts

Catalytic behaviors of solid base catalysts for mixed Tishchenko reactions were investigated to elucidate the activity- and selectivity-determining factors in active sites of the catalysts and molecular structures of the reactants. A mixture containing equal amounts of two kinds of aldehydes was allowed to react at 353 K. The aldehydes used were benzaldehyde, pivalaldehyde, and cyclopropanecarbaldehyde. For all the reactions, the catalytic activity of alkaline earth oxides increased in the order of BaO⪡MgO