十二烷基磺酸镧催化合成肉桂酸正丁酯的研究  

Study on synthesis of n-butyl cinnamate catalyzed by Lanthanum tridodecanesulfonate

作　　者：杜晓晗[1] 

机构地区：[1]苏州健雄职业技术学院生物与化学工程系,江苏太仓215411

出　　处：《化学研究与应用》2017年第6期888-891,共4页Chemical Research and Application

摘　　要：合成了十二烷基磺酸镧,用于催化正丁醇和肉桂酸的酯化反应,考察了醇酸摩尔比、催化剂用量和反应时间对反应结果的影响,对合成的产品用折光率、元素分析、红外光谱和~1H/^(13)C核磁进行了表征。实验结果表明,十二烷基磺酸镧催化合成肉桂酸正丁酯的最佳反应条件为:醇酸摩尔比为2∶1,催化剂用量3.0%(以肉桂酸的物质的量计),反应时间120 min,反应温度140℃。在最佳反应条件下,肉桂酸正丁酯收率在94%以上。反应结束后,催化剂通过简单的相分离即可重复使用,催化剂重复使用5次仍保持较高活性。Lanthanum tridodecanesulfonate was prepared and was used as the catalyst in the esterification of cinnamic acid with butanol.The effects of alcohol % acid molar ratio,amount of catalyst and reaction time had been investigated.The products was characterized by means of refractive index,elemental analysis,FT-IRand1H/13 C NMR. The yield could be over 94% under the optimum conditions that molar ratio of butanol to cinnamic acid,2 ∶ 1; amount of catalyst,3. 0%（ molar percentage of cinnamic acid）; 120 minutes reaction time and 140 ℃ reaction temperature.The catalyst could be reused by simple phase-separation after reaction. The catalyst kept high capability after reuse five times.

关 键 词：十二烷基磺酸镧 肉桂酸 正丁醇 肉桂酸正丁酯 催化 

分 类 号：O623.624[理学—有机化学]