对伞花烃直接电解氧化反应的评价(英文)

EVALUATION ON DIRECT ELECTROLYTIC OXIDATION OF p-CYMENE

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/cm2。

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/cm2 of current density.