有机闪烁剂1,4-双(2-甲基苯乙烯基)苯的合成、表征和稳定性  

Synthesis,Characterization,and Stability of 1,4-Bis(2-methylstyryl)benzene

作　　者：邓嘉伦[1] 刘小成[1] 胡丽[1] 邱黎[1] 蔡光威 张刚[1] 李自勇[1] 李翔[1] DENG Jia-lun;LIU Xiao-cheng;HU Li;QIU Li;CAI Guang-wei;ZHANG Gang;LI Zi-yong;LI Xiang(Haiso Technology Co.,Ltd.,Wuhan 430074,China)

机构地区：[1]华烁科技股份有限公司,湖北武汉430074

出　　处：《化学与生物工程》2018年第7期57-60,共4页Chemistry & Bioengineering

摘　　要：1,4-双(2-甲基苯乙烯基)苯(bis-MSB)应用于闪烁剂,作为波长位移剂使用。以邻二甲苯为原料,与二溴海因进行溴化反应、与三苯基膦进行叶立德反应、在叔丁醇钾存在下与对苯二甲醛发生Wittig反应,合成了目标产物bisMSB。总收率74.9%,纯度99.9%(HPLC),其结构经HPLC、DSC、FTIR、1 HNMR、13 CNMR确证。紫外可见吸收光谱测试表明,加入42-叔丁基对苯二酚(TBHQ)可显著提高bis-MSB的稳定性。The chemical compund,1,4-bis(2-methylstyryl)benzene(bis-MSB),can be applied to scintillators as a wavelength shift agent.We synthesized the target product bis MSB starting from o xylene via the bromination reaction with dibromohydantoin,Ylide reaction with triphenylphosphine,and Wittig reaction with terephthalaldehyde in the presence of potassium tert-butylate.The overall yield of bis MSB is 74.9%and its purity is 99.9%(HPLC).The structure of bis MSB was determined by HPLC、DSC,FTIR,1HNMR,and 13 CNMR.The UV-Visible absorption spectra show that the addition of 4 tert butylhydroquinone(TBHQ)can significantly improve the stability of bis MSB.

关 键 词：1 4-双(2-甲基苯乙烯基)苯 闪烁剂 合成 表征 稳定性 

分 类 号：TQ241.2[化学工程—有机化工]