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42-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.
作者
邓嘉伦
刘小成
胡丽
邱黎
蔡光威
张刚
李自勇
李翔
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)
出处
《化学与生物工程》
CAS
2018年第7期57-60,共4页
Chemistry & Bioengineering
