三乙基苄基氯化铵相转移催化性能研究  

Studies on Phase-Transfer Catalysis Properties of Triethyl Benzyl Ammonium Chloride

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：《咸阳师范学院学报》2009年第4期49-51,共3页Journal of Xianyang Normal University

摘　　要：以三乙胺,氯化苄为原料,经季铵化反应得到相转移催化剂三乙基苄基氯化铵(TEBA),收率达到90%以上。通过实验探索,确定最佳反应条件是:异丙醇为溶剂,n(三乙胺)∶n(氯化苄)=1∶1,T=82℃～84℃,t=8h,其结构通过红外光谱图得以证实。将三乙基苄基氯化铵应用于苯甲酸(芳烃氧化)和对硝基苯甲醚(亲核取代)的合成反应中,产品收率大大提高,反应时间明显缩短,并进一步确定了TEBA作为相转移催化剂在上述两种反应中的最佳应用条件。In This paper, the phase transfer catalyst three ethyl benzyl chloride（TEBA） was prepared from triethylamin and benzyl chloride After quatemized reactive, the yield was higher than 80%. Through experiments to explore, the optimum reaction conditions were determined：isopropanol as the solvent,n（N（C2Hs）3）： n（C6H6CH2C1）= 1 ： 1,T=-82℃-84℃,t=8h; Its structure was confirm by IR.The three ethyl benzyl ammonium chloride used in the synthesis reaction of Benzoic acid （aromatic hydrocarbon oxidation） and p-nitroanisole （nucleophilic substitution）, the product yield significantly improved, reaction time was significantly shorter,and further identified as a phase transfer catalyst TEBA in the above two reactions in the best application conditions.

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：O69[理学—化学]