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The synthesis of N,N′-bismethyl-N,N′-bis-(2,3,4,5,6-pentahydroxyhexyl)-2,3,5,6-tetraiodoterephthalamide

ZHANG Lai-guo 1,2,LUO Shi-neng *1,2,LIU Xiao-ya1,XIE Min-hao2,ZOU Pei2,LIU Ya-ling2,HE Yong-jun2 (1.School of Chemical and Material Engineering,South Yangtze University,Wuxi 214036,China;2.Jiangsu Institute of Nuclear Medicine,Wuxi 214063,China)  
N,N′-Bismethyl-N,N′-bis-(2,3,4,5,6-pentahydroxyhexyl)-2,3,5,6-tetraiodoterephthal-amide is synthesized by iodination of terephthalic acid,acyl chloride and amdiation.Their structures were identified by elemental analysis,IR,MS and 1HNMR.Under the optimal reaction conditions triethylamine∶tetraiodoisophthalic acid dichloride∶N-methylglucamine=2.1∶1∶2.4,reaction temperature is 40℃,the yield is 71.5%.
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