Bahador Karami - Academia.edu (original) (raw)
Papers by Bahador Karami
Biological Trace Element Research, May 1, 2009
In this study, we investigate the toxic effects of cobalt chloride on some hematological factors ... more In this study, we investigate the toxic effects of cobalt chloride on some hematological factors of the carp Cyprinus carpio, such as white blood cell count, red blood cell count, hemoglobin, hematocrit, mean corpuscular volume, mean corpuscular hemoglobin, and mean corpuscular hemoglobin concentration. At first, LC 50 of cobalt in C. carpio was measured during 96 h after exposure. Also, physicochemical parameters of water including pH, dissolved oxygen, viscosity, temperature, and conductivity were monitored, continuously. The results showed that LC 50 values of cobalt in C. carpio were 327 and 328 mg/L in two replicates, respectively. Then, the changes in some hematological factors in the five treatment groups placed under concentration of 100, 200, 300, 400, and 500 mg/L cobalt were compared with the control group. Based on hematological tests conducted in this research, exposure of carp to 500-and 300-mg/L concentrations of cobalt in 48 h showed significant difference (p<0.05) in white blood cell count. The concentration of 500 mg/L cobalt in 24 h showed a significant difference in the amount of hemoglobin, number of red blood cells, and hematocrit level as compared with the control group. The Biol Trace Elem Res (concentration of 100 mg/L cobalt in 48 h did not show a significant difference in comparison with the control group (p>0.05). Also, the concentration of 500 mg/L cobalt in 24 h showed a significant difference in the amount of mean corpuscular volume and mean corpuscular hemoglobin as compared with the control group and other treatments. Also, the percentage of mean corpuscular hemoglobin concentration in a concentration of 200 mg/L cobalt in 24 h showed a significant difference as compared with the control group and other treatments.
Data Revues 16310748 V16i11 S1631074813000908, Oct 23, 2013
Acta Chimica Slovenica, 2014
Silica tungstic acid (STA) has been found to be an efficient and reusable solid acid catalyst for... more Silica tungstic acid (STA) has been found to be an efficient and reusable solid acid catalyst for the synthesis of 2-amino-4H-chromenes via the three-component reaction of aromatic aldehydes, malononitrile, and β-naphthol. STA as a novel solid acid was characterized by X-ray fluorescence, X-ray diffraction, and Fourier transform infrared spectroscopy.
TURKISH JOURNAL OF CHEMISTRY, 2015
ChemInform, 2014
ABSTRACT Tungstate sulfuric acid (TSA) was composed of anhydrous sodium tungstate and chlorosulfo... more ABSTRACT Tungstate sulfuric acid (TSA) was composed of anhydrous sodium tungstate and chlorosulfonic acid with a new modified and efficient method. Catalyst was characterized by powdered X-ray diffraction (XRD), X-ray fluorescence (XRF), FT-IR spectroscopy and titration with NaOH (0.1 N). In the present study, highly efficient role of TSA as a catalyst in polysubstituted imidazoles synthesis as pharmaceuticaly important molecules via condensation between a wide range of aryl aldehydes, primary amines, benzil, and ammonium acetate in solventless conditions is reported. Therefore, new application of this catalyst to synthesize some novel imidazoles is introduced.
Multicomponent, one-pot, highly efficient, and environmentally adapted synthesis of some novel po... more Multicomponent, one-pot, highly efficient, and environmentally adapted synthesis of some novel poly-substituted imidazoles by the use of various aldehydes, benzil, aliphatic, and aromatic primary amines and ammonium acetate in the presence of Fe 3 O 4 nanoparticles as catalyst under solvent-free condition is ex-plained. A highly efficient role of Fe 3 O 4 nanoparticles as catalyst in this synthesis was shown. By this advantage, several polysubstituted imidazoles as pharmaceutical important molecules can be prepared in high yield and high purity. This method is very easy and rapid for the synthesis of imidazole derivatives. All products were deduced from their IR and NMR spectroscopic data. The Fe 3 O 4 nanoparticles were characterized by powdered X-ray diffraction (XRD), transmission electron microscopy (TEM), and FT-IR spectroscopy.
ChemInform
Y(NO3)3 as well as SnCl2 appear to be efficient catalysts for the synthesis of xanthene derivativ... more Y(NO3)3 as well as SnCl2 appear to be efficient catalysts for the synthesis of xanthene derivatives such as (III) and (V) via condensation of a wide range of aryl aldehydes and cyclohexane-1,3-diones.
Journal of Chemical Sciences, 2013
Tetrahedron Letters, 2014
Acta chimica Slovenica, 2014
Silica tungstic acid (STA) has been found to be an efficient and reusable solid acid catalyst for... more Silica tungstic acid (STA) has been found to be an efficient and reusable solid acid catalyst for the synthesis of 2-amino-4H-chromenes via the three-component reaction of aromatic aldehydes, malononitrile, and β-naphthol. STA as a novel solid acid was characterized by X-ray fluorescence, X-ray diffraction, and Fourier transform infrared spectroscopy.
Chinese Chemical Letters, 2014
Tetrahedron Letters, 2015
Biological Trace Element Research, May 1, 2009
In this study, we investigate the toxic effects of cobalt chloride on some hematological factors ... more In this study, we investigate the toxic effects of cobalt chloride on some hematological factors of the carp Cyprinus carpio, such as white blood cell count, red blood cell count, hemoglobin, hematocrit, mean corpuscular volume, mean corpuscular hemoglobin, and mean corpuscular hemoglobin concentration. At first, LC 50 of cobalt in C. carpio was measured during 96 h after exposure. Also, physicochemical parameters of water including pH, dissolved oxygen, viscosity, temperature, and conductivity were monitored, continuously. The results showed that LC 50 values of cobalt in C. carpio were 327 and 328 mg/L in two replicates, respectively. Then, the changes in some hematological factors in the five treatment groups placed under concentration of 100, 200, 300, 400, and 500 mg/L cobalt were compared with the control group. Based on hematological tests conducted in this research, exposure of carp to 500-and 300-mg/L concentrations of cobalt in 48 h showed significant difference (p<0.05) in white blood cell count. The concentration of 500 mg/L cobalt in 24 h showed a significant difference in the amount of hemoglobin, number of red blood cells, and hematocrit level as compared with the control group. The Biol Trace Elem Res (concentration of 100 mg/L cobalt in 48 h did not show a significant difference in comparison with the control group (p>0.05). Also, the concentration of 500 mg/L cobalt in 24 h showed a significant difference in the amount of mean corpuscular volume and mean corpuscular hemoglobin as compared with the control group and other treatments. Also, the percentage of mean corpuscular hemoglobin concentration in a concentration of 200 mg/L cobalt in 24 h showed a significant difference as compared with the control group and other treatments.
Data Revues 16310748 V16i11 S1631074813000908, Oct 23, 2013
Acta Chimica Slovenica, 2014
Silica tungstic acid (STA) has been found to be an efficient and reusable solid acid catalyst for... more Silica tungstic acid (STA) has been found to be an efficient and reusable solid acid catalyst for the synthesis of 2-amino-4H-chromenes via the three-component reaction of aromatic aldehydes, malononitrile, and β-naphthol. STA as a novel solid acid was characterized by X-ray fluorescence, X-ray diffraction, and Fourier transform infrared spectroscopy.
TURKISH JOURNAL OF CHEMISTRY, 2015
ChemInform, 2014
ABSTRACT Tungstate sulfuric acid (TSA) was composed of anhydrous sodium tungstate and chlorosulfo... more ABSTRACT Tungstate sulfuric acid (TSA) was composed of anhydrous sodium tungstate and chlorosulfonic acid with a new modified and efficient method. Catalyst was characterized by powdered X-ray diffraction (XRD), X-ray fluorescence (XRF), FT-IR spectroscopy and titration with NaOH (0.1 N). In the present study, highly efficient role of TSA as a catalyst in polysubstituted imidazoles synthesis as pharmaceuticaly important molecules via condensation between a wide range of aryl aldehydes, primary amines, benzil, and ammonium acetate in solventless conditions is reported. Therefore, new application of this catalyst to synthesize some novel imidazoles is introduced.
Multicomponent, one-pot, highly efficient, and environmentally adapted synthesis of some novel po... more Multicomponent, one-pot, highly efficient, and environmentally adapted synthesis of some novel poly-substituted imidazoles by the use of various aldehydes, benzil, aliphatic, and aromatic primary amines and ammonium acetate in the presence of Fe 3 O 4 nanoparticles as catalyst under solvent-free condition is ex-plained. A highly efficient role of Fe 3 O 4 nanoparticles as catalyst in this synthesis was shown. By this advantage, several polysubstituted imidazoles as pharmaceutical important molecules can be prepared in high yield and high purity. This method is very easy and rapid for the synthesis of imidazole derivatives. All products were deduced from their IR and NMR spectroscopic data. The Fe 3 O 4 nanoparticles were characterized by powdered X-ray diffraction (XRD), transmission electron microscopy (TEM), and FT-IR spectroscopy.
ChemInform
Y(NO3)3 as well as SnCl2 appear to be efficient catalysts for the synthesis of xanthene derivativ... more Y(NO3)3 as well as SnCl2 appear to be efficient catalysts for the synthesis of xanthene derivatives such as (III) and (V) via condensation of a wide range of aryl aldehydes and cyclohexane-1,3-diones.
Journal of Chemical Sciences, 2013
Tetrahedron Letters, 2014
Acta chimica Slovenica, 2014
Silica tungstic acid (STA) has been found to be an efficient and reusable solid acid catalyst for... more Silica tungstic acid (STA) has been found to be an efficient and reusable solid acid catalyst for the synthesis of 2-amino-4H-chromenes via the three-component reaction of aromatic aldehydes, malononitrile, and β-naphthol. STA as a novel solid acid was characterized by X-ray fluorescence, X-ray diffraction, and Fourier transform infrared spectroscopy.
Chinese Chemical Letters, 2014
Tetrahedron Letters, 2015