The synthesis,antimicrobial activity and absorption characteristics of some novel heterocyclic disazo dyes |
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| Authors: | Fikret Karcı Nesrin Şener Mustafa Yamaç İzzet Şener Aykut Demirçalı |
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| Affiliation: | 1. Department of Chemistry, Faculty of Science–Arts, Pamukkale University, 20017 Denizli, Turkey;2. Department of Biology, Faculty of Science–Arts, Eski?ehir Osmangazi University,26480 Eski?ehir, Turkey;1. Department of PG Studies and Research in Chemistry, Kuvempu University, Jnanasahyadri, Shankaragatta, 577451, Shivamogga, Karnataka, India;2. Department of Chemistry, Government Science College, Bengaluru, 560001, Karnataka, India;3. Department of Chemistry, School of Applied Sciences, REVA University, Bengaluru, 560001, Karnataka, India;1. Department of Dyestuff Technology, Institute of Chemical Technology, Matunga (E), Mumbai, Maharashtra, PIN: 400 019, India;2. Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Matunga (E), Mumbai, Maharashtra, PIN: 400 019, India;1. Department of PG Studies and Research in Chemistry, School of Chemical Sciences, Kuvempu University, Jnana Sahyadri, Shankaraghatta 577451, Karnataka, India;2. Department of PG Studies and Research in Industrial Chemistry, Kuvempu University, Jnana Sahyadri, Shankaraghatta 577451, Karnataka, India |
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| Abstract: | Aniline derivatives were diazotized and coupled with 3-aminocrotononitrile to give the corresponding 2-arylhydrazono-3-ketiminobutyronitriles. Cyclization of these arylhydrazono derivatives with hydrazine monohydrate afforded 5-amino-4-arylazo-3-methyl-1H-pyrazoles which were subsequently diazotised and coupled with malononitrile to yield a series of pyrazolylhydrazonomalononitriles. These compounds were then reacted with hydrazine monohydrate to provide 10, novel, heterocyclic disazo dyes, which were characterized by elemental analysis and spectral methods. The antimicrobial activity and absorption characteristics of the dyes were also examined in detail. |
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