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Titlu: Azoic compounds obtained from 1H-4-ethoxycarbonyl-3-methyl-5-aminopyrazole and 1,3-disubstituted 1H-pyrazol-5-ones
Autori: Nițu, Sabina Violeta
Bercean, Vasile Nicolae
Badea, Valentin
Csunderlik, Carol
Subiecte: Chimie organică
Compuși organici
Articol
Azoic compounds
1H-4-ethoxycarbonyl-3-methyl-pyrazol-5-yl-diazonium chloride
1H-1,3-disubstituted-4-(1H-4-ethoxycarbonyl-3-methyl-pyrazol-5-yl)azo-5-pyrazolones
Data publicării: 2008
Editura: Timişoara: Editura Politehnica
Citare: Nițu, Sabina Violeta. Azoic compounds obtained from 1H-4-ethoxycarbonyl-3-methyl-5-aminopyrazole and 1,3-disubstituted 1H-pyrazol-5-ones. Timişoara: Editura Politehnica, 2008
Serie/Nr. raport: Buletinul ştiinţific al Universităţii „Politehnica” din Timişoara, România. Seria chimie şi ingineria mediului, Tom 53(67), fasc. 1-2 (2008), p. 115-117
Abstract: The coupling of 1H-4-ethoxycarbonyl-3-methyl-pyrazol-5-yl-diazonium chloride (2) with 1H-1,3-disubstituted5-pyrazolones (3), was performed in water-alcoholic solution, in the presence of sodium acetate and gave the corresponding 1,3-disubstituted 1H-4-(1H-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.
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