TY - JOUR
T1 - Novel disubstituted phenylene-linked bis-imidazole derivatives
T2 - Facile synthesis and optical properties
AU - Song, Guang Liang
AU - Zhu, Hong Jun
AU - Chen, Lei
AU - Liu, Shan
AU - Luo, Zhong Hua
PY - 2010/12
Y1 - 2010/12
N2 - Six novel disubstituted phenylene-linked bis-imidazole derivatives, 3a-3f, were prepared by a one-pot, microwave-assisted method under solvent-free conditions, in yields ranging from 61.6 to 85.6%. The new compounds were characterized by 1H- and 13C-NMR, UV/VIS, and fluorescence spectroscopy, and mass spectrometry, as well as by elemental analyses. The influence of substituents and solvents on the optical properties of 3a-3f was investigated. It was found that there is little influence on absorption and excitation spectra in contrast to emission spectra. Compounds 3a-3f exhibit strong fluorescence in solution, their fluorescence quantum yields ranging from 0.27 to 0.96.
AB - Six novel disubstituted phenylene-linked bis-imidazole derivatives, 3a-3f, were prepared by a one-pot, microwave-assisted method under solvent-free conditions, in yields ranging from 61.6 to 85.6%. The new compounds were characterized by 1H- and 13C-NMR, UV/VIS, and fluorescence spectroscopy, and mass spectrometry, as well as by elemental analyses. The influence of substituents and solvents on the optical properties of 3a-3f was investigated. It was found that there is little influence on absorption and excitation spectra in contrast to emission spectra. Compounds 3a-3f exhibit strong fluorescence in solution, their fluorescence quantum yields ranging from 0.27 to 0.96.
KW - Bis-imidazoles, phenylene-linked
KW - Fluorescence
KW - Microwave-induced reactions
KW - Multicomponent reactions
UR - http://www.scopus.com/inward/record.url?scp=78650331494&partnerID=8YFLogxK
U2 - 10.1002/hlca.201000014
DO - 10.1002/hlca.201000014
M3 - 文章
AN - SCOPUS:78650331494
SN - 0018-019X
VL - 93
SP - 2397
EP - 2405
JO - Helvetica Chimica Acta
JF - Helvetica Chimica Acta
IS - 12
ER -