相转移催化剂TEBAC的合成与应用研究  

Study on synthesis and applications of phase transfer catalyst TEBAC

作　　者：李玉红[1] 孟小华[1] 

机构地区：[1]咸阳师范学院化学与化工学院,陕西咸阳712000

出　　处：《宝鸡文理学院学报（自然科学版）》2009年第3期40-42,共3页Journal of Baoji University of Arts and Sciences(Natural Science Edition)

摘　　要：目的研究相转移催化剂TEBAC（Triethyl Benzyl Ammonium Chloride,三乙基苄基氯化铵）的合成以及在相转移过程中的催化性能。方法以N（C2H5）3、氯化苄为反应物,异丙醇为溶剂,经季铵化反应合成TEBAC,利用红外光谱图证实其结构,并进行其应用研究。结果TEBAC合成收率达到93.33%以上。通过实验探索,确定最佳合成反应条件是：异丙醇为溶剂,nN（C2H5）3∶nC6H6CH2Cl=1∶1,T=82～84℃,t=8 h,其结构通过红外光谱图得以证实。将其应用于芳烃氧化（苯甲酸）和亲核取代（对硝基苯甲醚）的合成反应中,提高了产品收率,缩短了反应时间。结论自制的相转移催化TE-BAC应用于芳烃氧化（苯甲酸）和亲核取代（对硝基苯甲醚）的合成反应,效果良好。Aim To study the synthesis of phase transfer catalyst——triethyl benzyl ammonium chloride（TEBAC） and its catalytic activity in phase transfer catalytic reactions. Methods TEBAC is prepared from triethytamine and benzyl chloride in isopropanol by quaternized reaction, the infrared spectral analysis is used to determine the synthesis product structure. Results The yield of synthesis product is up to 93.33%. The experimental results shown that the optimum reaction conditions are isopropanol as the solvent, 84℃,t=8 h ; its structure was confirmed by IR spectral analysis. TEBAC was used in the synthesis reactions of benzoic acid （oxidation reaction of aromatic hydrocarbons） and p-nitroanisole （nucleophilic substitution reactions）. Conclusion It has a good effect that the self-synthesis phase transfer catalyst TEBAC was used to aromatic hydrocarbon oxidation reaction and nucleophilic substitution reaction, the yield is higher, and reaction time is shorter than without TEBAC.

关 键 词：三乙基苄基氯化铵 苯甲酸 对硝基苯甲醚 相转移催化 

分 类 号：O643.36[理学—物理化学]