芥酸氧化裂解制备十三烷二酸研究

Study on the Oxidative Cleavage of Erucic Acid to Brassylic Acid

本文研究了过氧化氢氧化裂解芥酸制备十三烷二酸,实验以磷钨酸为催化剂,在相转移条件下进行。详细考察了催化剂添加方式、不同相转移试剂、磷钨酸用量、过氧化氢浓度、过氧化氢用量对产物产率的影响。结果表明:三辛基甲基氯化铵作为相转移试剂效果最佳,当经预处理的磷钨酸用量为3%,过氧化氢浓度为60%、用量为6倍双键量时,可得到较高的十三烷二酸产率,为83.5%。

The oxidative cleavage of erucic acid to brassylic acid was reported,respectively using hydrogen peroxide and phosphotungstic acid as oxidant and catalyst,in the phase transfer situation.The influence factors to the yield such as the addition measures of catalyst,the different kinds of phase-transfer reagents,the dosage of catalyst,the concentration and dosage of hydrogen peroxide were investigated in detail.The results illustrated that TOMAC is the optimum phase-transfer reagent.When 3% of the pretreated phosphotungstic acid and 6 times of hydrogen peroxide（60%） were used,the yield of brassylic acid was up to 83.5%.