SYNTHESIS OF PROTON-TRANSFER FLUORESCENT DYES - 2,5-BIS(2'-BENZAZOLYL)HYDROQUINONES AND RELATED-COMPOUNDS

被引:22
|
作者
STEFANI, V
SOUTO, AA
ACUNA, AU
AMATGUERRI, F
机构
[1] CSIC,INST QUIM FIS ROCASOLANO,E-28006 MADRID,SPAIN
[2] CSIC,INST QUIM ORGAN,E-28006 MADRID,SPAIN
关键词
D O I
10.1016/0143-7208(92)85003-5
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
The synthesis and efficient purification of the fluorescent dyes 2,5-bis(2'-benzimidazolyl) hydroquinone (1) and 2,5-bis(2-benzoxazolyl)hydroquinone (2), in the quantities needed for laser work, are reported Additionally, simple modifications of these procedures are described for obtaining the corresponding monoheterocyclic compounds 4-(2'-benzimidazolyl)- and 4-(2'-benzoxazolyl)-2,5-dihydroxybenzoic acids 3 and 4. Methylation and/or acetylation of bisbenzoxazole 2 yielded the respective mono- and disubstituted derivatives, which are important model molecules for the photophysical study of the parent dye.
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页码:97 / 107
页数:11
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