Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Farouk H. Al-Hajjar"'
Autor:
F.M. Al-Kharafi, Farouk H. Al-Hajjar
Publikováno v:
Corrosion Science. 28:163-171
The cathodic and anodic behaviour of copper in tap water at pH values of 5, 7 and 9 has been studied at 50 ± 1°C in the presence of different concentrations of 2-amino-thiazole (ATZ) and 2-amino-4,6-dimethyl-pyrimidine (ADMP). The chemical nature o
Publikováno v:
Applied Spectroscopy. 33:406-409
Nuclear magnetic resonance methods were used for the determination of average structural formulae and formula weights of the saturate, naphthene-aromatic, and polar-aromatic fractions separated from asphalts by elution adsorption chromatography. The
Publikováno v:
Journal of Chemical & Engineering Data. 25:85-88
Autor:
Adil A. Jarrar, Farouk H. Al-Hajjar
Publikováno v:
Journal of Heterocyclic Chemistry. 17:1521-1525
Autor:
H. S. Hamoud, Farouk H. Al-Hajjar
Publikováno v:
Journal of Heterocyclic Chemistry. 18:591-597
Reactions of 3-aryl-1-phenyl-2-propen-1-ones IIa-d with ethyl phenylacetate (I) in the presence of sodium ethoxide under reflux for one hour gave only the corresponding 3,5-diaryl-2,4-dibenzoyl-6-phenyl-cyclo-hexanones IIIa-d. The reaction of these c
Publikováno v:
Journal of Chemical & Engineering Data. 23:345-349
Publikováno v:
Journal of Chemical & Engineering Data. 27:213-217
Autor:
Farouk H. Al-Hajjar, Ahmad Y. Kassim
Publikováno v:
Chemical and Pharmaceutical Bulletin. 27:620-624
Ionization constants, pKa, for a set of six monothiodiacylmethanes have been determined in 50 vol% ethanol-water mixture at 25°±0.1. Excellent linear correlations are obtained when pKa values are plotted against the substituent constant, σx, and t
Publikováno v:
Journal of Heterocyclic Chemistry. 15:759-763
Reactions of acetylenic ketones (Ia-f) with methyl α-naphthylacetate in the presence of sodium methoxide gave the corresponding 6-aryl-3-α-naphthyl-4-phenyl-2-pyrones (IIa-f) which upon refluxing with hydrazine hydrate in ethanol gave the correspon