对氨基苯甲酸乙酯的制备  

Preparation of Ethyl P-aminobenzoate

作　　者：孟祥福[1] 

机构地区：[1]承德石油高等专科学校化学工程系,河北承德067000

出　　处：《承德石油高等专科学校学报》2016年第2期10-12,共3页Journal of Chengde Petroleum College

摘　　要：以对硝基苯甲酸乙酯为原料,Zn粉和给质子剂为催化剂,还原制备对氨基苯甲酸乙酯。研究了两种给质子剂、反应时间、Zn粉的质量及影响产品析出的影响条件等因素对实验结果的影响。实验发现:用乙醇和冰醋酸组成的给质子剂效果好,反应时间120 min,Zn粉质量超过理论1∶3计算量的30%时,乙醇蒸出量以剩余液体呈浑浊状或有油滴出现为止,萃取用乙醚蒸出剩余量5 m L,低温便于晶体析出,产率达到80.2%。Ethyl p-aminobenzoate was synthesized with ethyl p-nitrobenzoate by catalyst of Zn and proton donor solvent. The paper deals with the effects on the experiment because of the affecting facts of the proton doner solvent,reaction time,the quality of Zn and crystal precipitation condition.The results showed： the catalyst of Zn and ethanol glacial is good with reaction time of 120 min,the quality of Zn material ratio of Zn and ethyl p-aminobenzoate 3 ∶ 1 and amount of substances over30%,the amount of ethanol distilled by the remaining liquid turbid or oil dropping. The remainder of ether is 5ml and low temperature contributes to the yield of the production with the producing rate of 80. 2%.

关 键 词：对氨基苯甲酸乙酯 催化剂 制备 

分 类 号：TQ245[化学工程—有机化工]