Synthesis of Hydroxypivalic Acid via Direct Electrooxidation of Hydroxypivalaldehyde

Abstract

Abstract: Hydroxypivalic acid was synthesized by oxidation of hydroxypivalaldehyde at PbO₂ electrode in sulfuric acid solution with proton exchange membrane. The change trends of the selectivity and the current efficiency with changing the concentration of hydroxypivalaldehyde, pH, reaction temperature and anode potential were studied. It was found that the effect of pH on the selectivity and the current efficiency is the largest. The highest selectivity is 92.6%, the highest current efficiency is 61.4%. High performance liquid chromatography was used to analyze the concentrations of products and reactants. The melting point, elemental analysis and IR spectrum were used to characterize the product after the separation and purification.

Key words: Hydroxypivalaldehyde, Hydroxypivalic acid, Electrooxidation, HPLC

CLC Number:

O646

TrendMD:

YU Jian-Guo, ZHANG Heng-Bin, LI Fei, CAO Xue-Jing, LIN Ying-Jie . Synthesis of Hydroxypivalic Acid via Direct Electrooxidation of Hydroxypivalaldehyde[J]. Chem. J. Chinese Universities, 2004, 25(11): 2104.

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