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Synthesis Absorption Properties and Biological Evaluation of Some Novel Disazo Dyes Derived from Pyrazole Derivatives      
Yazarlar
Prof. Dr. Nesrin ŞENER Prof. Dr. Nesrin ŞENER
Kastamonu Üniversitesi, Türkiye
Prof. Dr. İzzet ŞENER Prof. Dr. İzzet ŞENER
Pamukkale Üniversitesi, Türkiye
Serkan Yavuz
Gazi Üniversitesi, Türkiye
Fikret Karcı
Pamukkale Üniversitesi, Türkiye
Özet
In this study, 20 novel disazo dyes containing pyrazole derivatives were synthesized by a convenient method. Diazotized aniline and some aniline derivatives were reacted with malononitrile to give 2-arylazomalononitrile derivatives 1(a-e). The synthesized 2-arylazomalononitrile derivatives were reacted with hydrazine and phenyl hydrazine to afford the corresponding 3,5-diamino-4-arylazo-1 H-pyrazole 2(a-e) and 3,5-diamino-4-arylazo-1-phenylpyrazole 3(a-e). Diazotized compounds of 2(a-e)and 3(a-e) reacted with ethylacetoacetate to give 4-arylazo-3-amino-1 H-pyrazole-5-ylazo-ethylacetoacetate 4(a-e) and 4-arylazo-3-amino-1-phenylpyrazole-5-ylazo-ethylacetoacetate 7(ae). The obtained 4(a-e) and 7(a-e) were reacted with hydrazine and phenyl hydrazine to give disazo dyes 5(a-e), 6(a-e), 8(a-e) and 9(a-e), respectively. The synthesized disazo dyes were characterized by spectroscopic techniques as well as elemental analysis. The solvatochromic behaviours of these dyes in various solvents were examined. Acid-base effects on the absorption maxima of the dyes were also reported. Antimicrobial activities of the synthesized novel disazo dyes were investigated.
Anahtar Kelimeler
Antimicrobial activity | Diazotization | Disazo dyes | Pyrazole | Pyrazolone | Solvatochromism
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı Asian Journal of Chemistry
Dergi ISSN 0970-7077
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce
Basım Tarihi 01-2015
Cilt No 27
Sayı 8
Sayfalar 3003 / 3012
Doi Numarası 10.14233/ajchem.2015.18769
Makale Linki http://www.asianjournalofchemistry.co.in/user/journal/viewarticle.aspx?ArticleID=27_8_60