两神噻唑偶氮三酚类星色剂的合成及分析应用  

Syntheses and analytical applications of two kinds of thiazolylazo-pyrogallol organic reagents

作　　者：周华方[1] 王镇浦[1] 王锦堂[1] 

机构地区：[1]徐州师范学院化学系,南京化工学院应化系

出　　处：《化学试剂》1995年第5期269-270,268,共3页Chemical Reagents

基　　金：江苏省自然科学基金

摘　　要：以２－氨基噻唑和２－氨基苯并噻唑为原料，经溴化和重氮化，与连苯三酚偶联合成了４－（５－溴－２－噻唑偶氮）连本三酚和４－（６－溴－２－苯并噻唑偶氮）连苯三酚，通过了元素分析和波谱鉴定。研究了两种试剂的一般性质及其与高价金属离子的显色反应，发现在阳离子表面活性剂存在下它们与Ｍｏ（Ⅵ）、Ｗ（Ⅵ）、Ｔｉ（Ⅵ）等显色反应有较高的灵敏度。Bromo-thiazolylazo) pyrogallol (5- BrTAPG) and 4-(6-Bromo-2-benzotbiazolylazo) pyrogallol (6-Br-BTAPG), two kinds of organic reagents,have been synthesized by coupled reaction of brominated and diazotized 2-aminothiazole and 2-aminobenzothiazole with pyrogallol. Analysis and characterization of synthesized products using elementalanalysis,MS,NMR) IR and vis spectra etc, have beencarried out. Sensitive chromogenic reaction of thetwo reagents with Mo(Ⅵ), W(Ⅵ), Ti(Ⅳ),etc. inthe presence of cationic surfactants was investigated.

关 键 词：合成 噻唑偶氮 苯并噻唑偶氮 连苯三酚 显色剂 

分 类 号：O657.32[理学—分析化学] O626.25[理学—化学]