对伞花烃直接电解氧化反应的评价

研究了在有机溶剂、合适的支持电解质和碳棒存在下，对伞花烃的直接电解氧化反应，使用GC和GC-MS方法分析测定了主要电解氧化产物，如：百里香酚甲醚、1-异丙基-4-甲氧甲基苯、枯茗醛、枯茗醇、对二甲氧甲基异丙基苯、枯茗酸甲酯、对羟基甲氧甲基异丙基苯、乙酸枯茗酯和1-二甲氧甲基-4-(1-甲氧基-1-甲基乙基)苯。详细研究了影响氧化主产物得率的主要因素，对伞花烃直接电解氧化选择性地制备枯茗醛合理的电解条件为：电解时间20-25h，甲醇／乙酸体积比10：1，氟硼酸钠作支持电解质，阳极／阴极面积比1：1，电流密度0．018A／cm^2。

DVALUATION ON DIRECT ELECTROLYTIC OXIDATION OF p-CYMENE

Direct electrolytic oxidation of p-cymene in the presence of organic solvents,appropriate supporting electrolyte and carbon rod electrodes was studied in this study.Main electrolytic oxidative products,such as,thymol methyl ether,1-isopropyl-4-methoxymethylbenzene,cuminaldehyde,p-cymen-7-ol,p-(dimethoxy-methyl)-isopropylbenzene,methyl 4-isopropylbenzoate,p-(hydroxy-methoxymethyl)-isopropylbenzene,cuminyl acetate,and 1-(dimethoxymethyl)-4-(1-methoxy-1-methyl-ethyl)-benzene,were determined by GC and GC-MS.Factors influencing the yield of the main oxidative product were studied in detail.Reasonable conditions for direct electrolytic oxidation of p-cymene to selectively prepare cuminaldehyde are:20-25 h for electrolysis,10∶1 ratio of methanol to acetic acid,sodium fluoborate as supporting electrolyte,1:1 area ratio of anode to cathode,0.018 A/cm2 of current density.