Please use this identifier to cite or link to this item: https://hdl.handle.net/11499/4674
Title: Synthesis of 4-amino-1H-benzo[4,5]imidazo[1,2-a]pyrimidin-2-one and its disperse azo dyes. Part 1: Phenylazo derivatives
Authors: Karci, F.
Demirçali, A.
Şener, I.
Tilki, T.
Keywords: Absorption properties
Azopyrimidone dyes
Diazo-coupling reaction
Disperse dyes
Solvent effect
Substituent effect
Absorption
Derivatives
Dispersions
Fourier transform infrared spectroscopy
Nuclear magnetic resonance spectroscopy
pH effects
Solvents
Synthesis (chemical)
Ultraviolet spectroscopy
Elemental analysis
Ethyl cyanoacetate
Phenylazopyrimidone dyes
Azo dyes
azo dye
Abstract: 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.
URI: https://hdl.handle.net/11499/4674
https://doi.org/10.1016/j.dyepig.2005.06.006
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

Show full item record



CORE Recommender

SCOPUSTM   
Citations

40
checked on Nov 16, 2024

WEB OF SCIENCETM
Citations

38
checked on Nov 21, 2024

Page view(s)

46
checked on Aug 24, 2024

Google ScholarTM

Check




Altmetric


Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.