The synthesis, characterization and optical properties of novel 5-(3-aryl-1H-pyrazol-5-yl)-2-(3-butyl-1-chloroimidazo[1,5-a]pyridin-7-yl)-1,3,4-oxadiazole
作者:Yan Qing Ge、Jiong Jia、Teng Wang、Hong Wei Sun、Gui Yun Duan、Jian Wu Wang
DOI:10.1016/j.saa.2013.12.016
日期:2014.4
A series of novel 5-(3-aryl-1H-pyrazol-5-yl)-2-(3-butyl-1-chloroimidazo[1,5-a]- pyridin-7-yl)-1,3,4-oxadiazole derivatives has been synthesized from 3-butyl-1-chloroimidazo[1,5-a]pyridine-7-carboxylic acid and ethyl 3-aryl-1H-pyrazole-5-carboxylate. The compounds were characterized using IR, H-1 NMR, HRMS and UV vis absorption. The fluorescence spectral characteristics of the compounds in dichloromethane were investigated. The results showed that absorption lambda(max) and emission lambda(max) was less correlated with substituent groups on N-1 position of pyrazole moiety and para position of benzene moiety. The calculated molecular orbital correlates well with their absorption. (C) 2013 Elsevier B.V. All rights reserved.