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Synthesis of 4 amino 1H benzo 4 5 imidazo 1 2 a pyrimidin 2 one and its disperse azo dyes Part 1 Phenylazo derivatives        
Yazarlar
Fikret Karcı
Pamukkale Üniversitesi, Türkiye
Aykut Demirçalı
Pamukkale Üniversitesi, Türkiye
Prof. Dr. İzzet ŞENER Prof. Dr. İzzet ŞENER
Pamukkale Üniversitesi, Türkiye
Tahir Tilki
Süleyman Demirel Üniversitesi, Türkiye
Özet
The reaction of 2-aminobenzimidazole with ethyl cyanoacetate gave access to an efficient synthesis of 4-amino-1H-benzo[4,5]imidazo[1,2-a]pyrimidin-2-one (I) in excellent yield. A series of novel phenylazopyrimidone dyes were prepared by linking o-, m-, p-nitroaniline, o-, m-, p-chloroaniline, o-, m-, p-anisidine, o-, m-, p-toluidine and aniline to 4-amino-1H-benzo[4,5]imidazo-[1,2-a]pyrimidin-2-one (I). The prepared compounds were characterized by UV-vis, FT-IR and 1H NMR spectroscopic techniques and elemental analysis. The effect of varying pH and solvent upon the absorption ability of phenylazopyrimidones substituted with electron-withdrawing and electron-donating groups at their o-, m-, p-position was examined. © 2005 Elsevier Ltd. All rights reserved.
Anahtar Kelimeler
Absorption properties | Azopyrimidone dyes | Diazo-coupling reaction | Disperse dyes | Solvent effect | Substituent effect
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı DYES AND PIGMENTS
Dergi ISSN 0143-7208
Dergi Tarandığı Indeksler SCI
Makale Dili İngilizce
Basım Tarihi 01-2006
Cilt No 71
Sayı 2
Sayfalar 90 / 96
Doi Numarası 10.1016/j.dyepig.2005.06.006
Makale Linki http://linkinghub.elsevier.com/retrieve/pii/S0143720805002160