华侨大学学报（自然科学版）Issue(4)：409-412,4.DOI:10.11830/ISSN.1000-5013.2014.04.0409
微波辐射SnCl4／C催化对羟基苯甲酸乙酯的合成与表征
Synthesis and Characterization of Ethyl p-Hydroxylbenzoate Catalyzed by SnCl4/C under Microwave-Assisted Condition
摘要
Abstract
Ethyl p-hydroxylbenzoate was produced from p-hydroxy benzoic acid and ethanol as starting materials by u-sing SnCl4/C as efficient and green heterogeneous catalyst under microwave?assisted condition.The influences of the quantity of SnCl4/C,the ratio of acid and ethanol,and reaction time and temperature factors on the esterification yield are discussed.The structure of ethyl p-hydroxylbenzoate was characterized by Fourier-transform infrared spectroscopy (FT-IR),1H nuclear magnetic resonance spectroscopy (1H NMR)and mass spectroscopy (MS).The results showed that the optimal reactive conditions were as following:10% catalyst,the ration of acid and ethanol 1∶4,the radiation time 25 mi-nutes,the reaction temperature 120 ℃,the microwave power 640 W.Under the optimal reactive conditions,the yield of ethyl p-hydroxylbenzoate was up to 95%.Moreover,SnCl4/C catalyst can be recycled and reused at least 4 consecutive runs without a noticeable drop in the product yield (89%).关键词
对羟基苯甲酸乙酯/微波合成/SnCl4/C/异相催化剂Key words
ethyl phydroxylbenzoate/microwave synthesis/SnCl4/C/heterogeneous catalyst分类
化学化工引用本文复制引用
陈会新,唐忠科,熊兴泉..微波辐射SnCl4／C催化对羟基苯甲酸乙酯的合成与表征[J].华侨大学学报（自然科学版）,2014,(4):409-412,4.基金项目
福建省教育厅 A类科技基金资助项目（JA12007）；华侨大学实验改革与建设基金资助项目 （）
