Delocalized cationic azo dyes containing a thiazole moiety

被引：17
|
作者：
Salvador, Maria A. [1 ]
Reis, Lucinda V. [1 ]
Almeida, Paulo [2 ,3 ]
Santos, Paulo F. [1 ]
机构：
[1] Univ Tras Os Montes & Alto Douro, Ctr Quim Vila Real, Dept Quim, P-5001801 Vila Real, Portugal
[2] Univ Beira Int, Dept Quim, P-6201001 Covilha, Portugal
[3] Univ Beira Int, Unidade I&D Mat Texteis & Papeleiros, P-6201001 Covilha, Portugal
来源：
TETRAHEDRON | 2008年 / 64卷 / 02期
关键词：
cationic azo dyes; thiazole; PDT; solvatochromism;
D O I：
10.1016/j.tet.2007.11.004
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Several new delocalized cationic azo dyes incorporating a bathochromic thiazole moiety have been prepared in moderate to good yields. The synthesis involved the Knoevenagel condensation of an intermediate azo Compound, hearing a terminal formyl group, with methylenic bases generated in situ from benzoazolium and quinolinium salts. All dyes display strong absorption around 700 nut and have shown negative solvatochromic behaviour. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：299 / 303
页数：5
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