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 (4)
Fikret Karcı Pamukkale Üniversitesi, Türkiye
Aykut Demirçalı Pamukkale Üniversitesi, Türkiye
Prof. Dr. İzzet ŞENER Pamukkale Üniversitesi, Türkiye
Tahir Tilki Süleyman Demirel Üniversitesi, Türkiye
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Dyes and Pigments
Dergi ISSN 0143-7208 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI
Makale Dili İngilizce Basım Tarihi 01-2006
Cilt / Sayı / Sayfa 71 / 2 / 90–96 DOI 10.1016/j.dyepig.2005.06.006
Makale Linki http://linkinghub.elsevier.com/retrieve/pii/S0143720805002160
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