期刊名称：Universitatea Politehnica din Timisoara. Buletinul Stiintific. Seria Chimie si Ingineria Mediului
印刷版ISSN：1224-6018
出版年度：2008
卷号：53(67)
期号：01-02
出版社：Universitatea Politehnica din Timisoara
摘要：The coupling of 1 H -4-ethoxycarbonyl-3-methyl-pyrazol-5-yl-diazonium chloride (2) with 1 H -1,3-disubstituted-5-pyrazolones (3), was performed in water-alcoholic solution, in the presence of sodium acetate and gave the corresponding 1,3-disubstituted 1 H -4-(1 H -4-ethoxycarbonyl-3-methyl-pyrazol-5-yl)azo-5-pyrazolones (4). The structure of the new azo dyes was confirmed by IR, VIS and NMR spectroscopy.
