Synthesis of the 1,2,4-Triazolo [4,3-a] quinazolin-5-ones and Related Compounds

Research Abstract
2-Hydrazino-3-phenyl-4(3H)-quinazolinone (1) underwent ring closure with aliphatic acid, aldehydes, and carbon disulfide to 1-alkyl-, 1-aryl-, and 1-mercapto-4-phenyl-1,2,4-triazolo[4,3-a]quinazolin-5(4H)-ones (7) for instance. The 1-alkylthio-3-phenyl-1,2,4-triazolo[4,3-a]quinazolin-5(4H)-ones were readily obtained from 7 and alkyl halides. Reaction of 1 with ethyl acetoacetate gave the corresponding hydrazone which was readily converted into 2-(3-methyl-5-oxo-2-pyrazolin-1-yl)-3-phenyl-4(3H)-quinazolinone
Research Authors
H.A. El-Sherief, A.E. Abdel-Rahman, G.M. El-Naggar, and A.M. Mahmoud
Research Department
Department of chemistry
Research Journal
Bull. Chem. Soc. Japan
Research Member
Hasan Ahmed Hasan Ahmed El-sheref
Research Pages
pp.1227-1230
Research Rank
2
Research Vol
Vol. 56, No. 4
Research Year
1983

Synthesis of the 1,2,4-Triazolo [4,3-a] quinazolin-5-ones and Related Compounds

Research Abstract
2-Hydrazino-3-phenyl-4(3H)-quinazolinone (1) underwent ring closure with aliphatic acid, aldehydes, and carbon disulfide to 1-alkyl-, 1-aryl-, and 1-mercapto-4-phenyl-1,2,4-triazolo[4,3-a]quinazolin-5(4H)-ones (7) for instance. The 1-alkylthio-3-phenyl-1,2,4-triazolo[4,3-a]quinazolin-5(4H)-ones were readily obtained from 7 and alkyl halides. Reaction of 1 with ethyl acetoacetate gave the corresponding hydrazone which was readily converted into 2-(3-methyl-5-oxo-2-pyrazolin-1-yl)-3-phenyl-4(3H)-quinazolinone
Research Authors
H.A. El-Sherief, A.E. Abdel-Rahman, G.M. El-Naggar, and A.M. Mahmoud
Research Department
Department of chemistry
Research Journal
Bull. Chem. Soc. Japan
Research Member
Galal Mostafa ahmed Mousa El-nagar
Research Pages
pp.1227-1230
Research Rank
2
Research Vol
Vol. 56, No. 4
Research Year
1983

Spectroscopic Studies of Aromatic Schiff's Bases
2- Synthesis and Ultraviolet Spectra of some Aromatic Schiff's Base Derivatives

Research Authors
J.M. Al-Katti, G.M. El-Naggar and M. Salow
Research Department
Department of chemistry
Research Journal
ZANCO, Scientific Journal of Sulaimaniyah University, Sulaimaniyah, Iraq
Research Member
Galal Mostafa ahmed Mousa El-nagar
Research Rank
1
Research Vol
Vol. 7 No 2
Research Year
1981

Spectroscopic Studies of Aromatic schiff's bases. 1- The Mass spectra of some aromatic Sciff's Bases Derivatives

Research Authors
J.M. Al-Katti, S.M. Sharaf and G.M. El-Naggar.
Research Department
Department of chemistry
Research Journal
ZANCO, Scientific Journal of Salahaddin University, Iraq
Research Member
Galal Mostafa ahmed Mousa El-nagar
Research Pages
pp. 76-93
Research Rank
2
Research Vol
Vol.7, No. 1
Research Year
1981

Studies on ferrocence and its derivatives V. Preparartion of some new Ferrocenyl Pyrazolines, pentan-1,5-diones and B-ketosu;phides

Research Abstract
Ferrocenyl pyrazolines have been prepared by the reaction of ferrocenyl chalcones with diazomethane and/or substituted benzenesulphonyl hydrazides. A Michael reaction on ferrocenyl chalcones using phenyl benzyl ketone and/or thiophenol yielded the corresponding ferrocenyl pentan-1,5-diones and ferrocenyl--ketosulphides, respectively
Research Authors
KH. M. Hassan, M.M. Aly and G.M. El-Naggar
Research Department
Department of chemistry
Research Journal
J. Chem. Tech. Bitotechnol.,
Research Member
Khairy Mohamed Hasan Abdel galeel
Research Pages
pp. 515 - 519
Research Rank
1
Research Vol
Vol. 29, No. 8
Research Year
1979
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