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https://hdl.handle.net/11499/4330
Title: | Synthesis of disazo pyrazolo[1,5-a]pyrimidines | Authors: | Karcı, Fikret Demirçalı, Aykut |
Keywords: | Condensation reaction Diazo-coupling reaction Disazo Intermolecular cyclization Pyrazolopyrimidine Amines Condensation Synthesis (chemical) Aminocrotononitrile Arylhydrazone ketimino-butyronitriles Arylhydrazonoacetoacetates Ethyl acetoacetate Ethyl cyanoacetate Malonitrile Azo dyes amine condensation infrared radiation spectroscopy |
Abstract: | p-Substituted anilines were diazotized and coupled with 3-aminocrotononitrile, malononitrile, ethyl cyanoacetate or ethyl acetoacetate to give the 2-arylhydrazone-3-ketimino-butyronitriles, 2-arylhydrazonomalononitriles, ethyl 2-arylhydrazonocyanoacetates and ethyl 2-arylhydrazonoacetoacetates, respectively. Cyclization of these arylhydrazone derivatives with 5-amino-4-arylazo-3-methyl-1H-pyrazoles or 3,5-diamino-4-arylazo-1H-pyrazoles in pyridine moiety afforded the corresponding disazo pyrazolo[1,5-a]pyrimidine derivatives. © 2006 Elsevier Ltd. All rights reserved. | URI: | https://hdl.handle.net/11499/4330 https://doi.org/10.1016/j.dyepig.2006.02.007 |
ISSN: | 0143-7208 |
Appears in Collections: | Fen-Edebiyat Fakültesi Koleksiyonu Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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