Synthesis, electronic spectra and solvatochromic behaviour of 4-arylidene-1-(2,4-dinitrophenyl)-3-methyl-2-Pyrazolin-5-ones

Research Abstract
The u.v.-visible electronic spectra of 4-arylidene-1-(2, 4-dinitrophenyl)-3-methyl-2-pyrazolin-5-ones (1a-f) have been studied. The different bands observed have been assigned to the proper electronic transition. Solvatochromic behaviour of these compounds is investigated by studying their visible spectra in organic solvents of different polarity. The longer wavelength band displayed by the hydroxy derivatives is assigned to an intermolecular CT transition. The H-bonding solvated complexes formed between ethanol or DMF and p-hydroxy substituted derivative are investigated. Transition moment (CT), G and Kf values of these complexes have been determined.
Research Authors
S. A. Ibrahim and M. S. K. Youssef
Research Department
Department of chemistry
Research Journal
Can.J.Chem,
Research Member
Mohamed Salah Kamel Youssef
Research Pages
,2841-2844
Research Publisher
NULL
Research Rank
2
Research Vol
,62
Research Website
NULL
Research Year
1984

Mass Spectra of Diastereomeric Substituted Secondary Va1er- and Butyrarmides.

Research Abstract
NULL
Research Authors
A.A. Abd E1-Wahab, M.S.K. Youssef and G. Helmchen.
Research Department
Department of chemistry
Research Journal
Rev. Roum. Chim.,
Research Member
Mohamed Salah Kamel Youssef
Research Pages
,41-48
Research Publisher
NULL
Research Rank
1
Research Vol
30(1),
Research Website
NULL
Research Year
1985

Some Reactions of 2-Mercapto-3,5,7-tripheny1pyrido[2,3-d]pyri1nidine-
4(3H)-one. Synthesis of Pyridotriazolo and Pyridotetrazolopyrimidine
Derivatives. .

Research Abstract
NULL
Research Authors
M.S.K. Youssef, M.F. El-Zohary, Kh.M. Hassan and
R.A. El-Wafa.
Research Department
Department of chemistry
Research Journal
Phosphorus. Sulfur and Silicon,
Research Member
Mohamed Salah Kamel Youssef
Research Pages
,197-201
Research Publisher
NULL
Research Rank
1
Research Vol
,44
Research Website
NULL
Research Year
1989

Electronic Spectroscopic Studies of Some 3-Methy1-5-pyrazo1one
Derivatives.

Research Abstract
NULL
Research Authors
A.S. El-Shahawy, M.M. Kandeel and M.S.K. Youssef.
Research Department
Department of chemistry
Research Journal
Z. Phys. Chemie-Lepizig ,
Research Member
Mohamed Salah Kamel Youssef
Research Pages
,1047-1055
Research Publisher
NULL
Research Rank
1
Research Vol
271(5),
Research Website
NULL
Research Year
1990

Behaviour of Benzenesulphonyloxy- and N-Acetoxy-2,3-quinoxalin-
dicarboximidies Towards Some Nucleophiles.

Research Abstract
NULL
Research Authors
M.S.-K. Youssef and M.S. Abbady.
Research Department
Department of chemistry
Research Journal
Hererocycles ,
Research Member
Mohamed Salah Kamel Youssef
Research Pages
,1671-1678
Research Publisher
NULL
Research Rank
1
Research Vol
45(9),
Research Website
NULL
Research Year
1997

Synthesis of Some New Fused Heterocyclic Ring Systems Related to 6-
Amino-1,4-dihydro-3-methyl-1-phenyl-4-thioxothiopyrano[4,3-c]pyrazole-7-carbonetrile.

Research Abstract
NULL
Research Authors
M.M. Kandeel, R.A. Ahmed and M.S.K. Youssef.
Research Department
Department of chemistry
Research Journal
Heterocycles,
Research Member
Mohamed Salah Kamel Youssef
Research Pages
,1121-1133
Research Publisher
NULL
Research Rank
1
Research Vol
57(6),
Research Website
NULL
Research Year
2002

Synthesis and Some Reactions of 2-Amino-6-(3-methyl-1-phenyl-5-oxo-2-
pyrazolin-4-yl)-4-phenylpyridine-3-carbonitrile.

Research Abstract
NULL
Research Authors
R.A. Ahmed, M.M. Kandeel, M.S. Abbady and M.S.K. Youssef.
Research Department
Department of chemistry
Research Journal
J. Heterocycl. Chem. ,
Research Member
Mohamed Salah Kamel Youssef
Research Pages
,309-314
Research Publisher
NULL
Research Rank
1
Research Vol
39(3-4),
Research Website
NULL
Research Year
2002

Some Reactions of 3-Methyl-5-oxo-1-phenyl-∆2-pyrazoline-4-dithiocarbohydrazide.

Research Abstract
NULL
Research Authors
M.M. Kandeel, M.S. Abbady and M.S.K. Youssef.
Research Department
Department of chemistry
Research Journal
Bull. Korean Chem. Soc.,
Research Member
Mohamed Salah Kamel Youssef
Research Pages
,41-47
Research Publisher
NULL
Research Rank
1
Research Vol
23(1),
Research Website
NULL
Research Year
2002
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