溴化N-丁基吡啶的合成与表征  

Synthesis and Characterization of N-butyl Pyridium Bromide

作　　者：许婷婷[1] 田鹏[1] 曾敬[1] 段纪东[2] 庄雪婷 

机构地区：[1]沈阳师范大学化学与生命科学学院,辽宁沈阳110034 [2]沈阳师范大学实验中心,辽宁沈阳110034

出　　处：《辽宁化工》2016年第2期140-142,共3页Liaoning Chemical Industry

基　　金：沈阳市科技局(项目批准号:F-14-231-1-36);辽宁省教育厅科研项目(项目批准号:LR2013051)

摘　　要：以C4H9Br和C5H5N合成了离子液体中间体BuPyBr,在室温下,回流2h,产率为94.8%。用IR和UV表征BuPyBr,BuPyBr在CH3CN中发生了红移,实验结果为λmax(H20)<λmax(C2H5OH)<λmax(CH3CN),溶剂的极性和pH值影响BuPyBr的UV光谱。BuPyBr在H2O、CH3OH、C2H5OH、CH3COOH、CH3CN、CH3COCH3等溶剂中有很好的溶解性;BuPyBr在CH3CH2OCH2CH3、CH3COOCH2CH3、CHCl3、CCl4、C6H12溶剂中不溶或难溶。Ionic liquid intermediate N-butyl pyridium bromide was synthesized from N-butyl bromide and pyridine, and the reaction process was improved and modified. Under optimized condition of reflux 2 h at room temperature, the yield was 94.8%. Their structures were characterized and analyzed by ultraviolet spectra and infrared spectra. The results show that the wavelength from big to small is as follows： acetonitrile, alcohol, water. The ultraviolet spectra show that the displacement of ultraviolet spectrogram can be both affected by dissolvent polarity and p H. The test results of ionic liquid intermediate solubility show that,the solubility of ionic liquid N-butyl pyridium bromide in water, methanol, ethanol, acetic acid, acetonitrile and acetone solvents is good, and the solubility of N-butyl pyridium bromide in ether, ethyl acetate, chloroform, carbon tetrachloride and cyclohexane solvents is poor.

关 键 词：BuPyBr 紫外光谱 红外光谱 溶解性 

分 类 号：O656[理学—分析化学]