Zha Li-wen
2010
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Journal
Chemical Research
Abstract
p-Bromobenzaldehyde was electrochemical synthesized via indirect oxidation of p-bromotoluene by Mn3+ generated from electrolysis of MnSO4 in H2SO4.The electrolytic oxidation conditions were optimized based on orthogonal experiments of L9(33).The optimized electrolytic oxidation conditions were determined as concentration of sulphuric acid of 6.5 mol/L,molar ratio of p-bromotoluene to Mn3+ 1∶4,electrolysis time of 6 h,synthetic time of 3 h,and temperature of 65 ℃.Under the optimized experiment conditions,the current efficiency and yield of p-bromobenzaldehyde could reach 75.36% and 75.47%,respectively.The present indirect electrosynthesis process is simple in terms of operational path,and the used medium can be recycled without pollution,showing potential application for green production.