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Substitution and Ring closure Reactions of Phthalazine Derivatives

Research Abstract
1-(Phenylthio)- and 1-(hydroxycarbonylmethylthio)-4-methylphthalazines were prepared from 1-chloro-4-methylphthalazines (1). A series of 2-benzyl- and benzenesulphonyl derivatives was prepared from the corresponding halides and 4-methyl-1(2H)-phthalazinone (4). 4-Methyl-1(2H)-phthalazinthione (6) was substituted at SH group to give 1-(benzylthio)- and 1-(ethoxycarbonylmethylthio)-4-methylphthalazines, 7 and 8 respectively. Treatment of hydrazine hydrate with 8 produced 1-hydrazino-4-methylphthalazine (10). However, when the latter compound was treated with 1 it gave 1,2-bis-(4-methylphthalazinyl)hydrazine. Treatment of 10 with aromatic aldehydes in glacial acetic acid gave the corresponding 3-phenyl-s-triazolo-[3,4-a]-6-methylphthalazines 13. 1-Hydrazino-4-methylphthalazine (10) underwent cyclization reactions with acetic anhydride, ethyl chloroformate, carbon disulphide, ethylformate, ethyl oxalate and with nitrous acid to give the corresponding triazolo-, triazino- and tetrazolophthalazine compounds
Research Authors
M.Z.A. Badr, H.A.H. El-Sherief, G.M. El-Naggar and S.A. Mahgoub
Research Department
Research Journal
J. Heterocyclic Chem
Research Member
Galal Mostafa ahmed Mousa El-nagar
Research Pages
pp. 471 - 475
Research Rank
1
Research Vol
Vol. 21, No. 2
Research Year
1984

Synthesis and Spectrophotometric studies on 2,3-Disubstituted-4(3H)-Quinazolinones

Research Authors
M.Z.A. Badr, A.M. Mahmoud, G.M. El-Naggar,H.A.H. El-Sherief and M.F. Abdel-Megeed
Research Department
Research Journal
Bull. Fac. Sc., Assiut Univ
Research Pages
pp. 17-32
Research Rank
1
Research Vol
Vol. 8, No. 1
Research Year
1979

Synthesis and Spectrophotometric studies on 2,3-Disubstituted-4(3H)-Quinazolinones

Research Authors
M.Z.A. Badr, A.M. Mahmoud, G.M. El-Naggar,H.A.H. El-Sherief and M.F. Abdel-Megeed
Research Department
Research Journal
Bull. Fac. Sc., Assiut Univ
Research Member
Galal Mostafa ahmed Mousa El-nagar
Research Pages
pp. 17-32
Research Rank
1
Research Vol
Vol. 8, No. 1
Research Year
1979

Synthesis of some New 6-Bromo-2-methyl-3-(p-substituted aminophenyl)-4(3H)-quinazolinones

Research Abstract
La bromo-6 méthyl-2 p-aminophényl-3 3H-quinazolinone-4(I) réagit avec différents aldéhydes, avec le chlorure de chloroacétyle, et des chlorures de sulfonyle pour former les azométhines, le dérivé N-chloroacétyl (A) et les sulfonamides correspondants. Traitement de A par certaines amines. Condensation de I avec les phényl-2 arylidène-4 oxazoline-5 ones en présence de ZnCl2
Research Authors
G.M. El-Naggar, H.A.H. El-Sherief, H. Aref and K. Abdel Hamid
Research Department
Research Journal
Di Pharmazie
Research Pages
pp. 821-822
Research Publisher
Govi, Eschborn, ALLEMAGNE (1946) (Revue)
Research Rank
1
Research Vol
Vol. 38, No. 12
Research Year
1983

Synthesis of some New 6-Bromo-2-methyl-3-(p-substituted aminophenyl)-4(3H)-quinazolinones

Research Abstract
La bromo-6 méthyl-2 p-aminophényl-3 3H-quinazolinone-4(I) réagit avec différents aldéhydes, avec le chlorure de chloroacétyle, et des chlorures de sulfonyle pour former les azométhines, le dérivé N-chloroacétyl (A) et les sulfonamides correspondants. Traitement de A par certaines amines. Condensation de I avec les phényl-2 arylidène-4 oxazoline-5 ones en présence de ZnCl2
Research Authors
G.M. El-Naggar, H.A.H. El-Sherief, H. Aref and K. Abdel Hamid
Research Department
Research Journal
Di Pharmazie
Research Member
Galal Mostafa ahmed Mousa El-nagar
Research Pages
pp. 821-822
Research Publisher
Govi, Eschborn, ALLEMAGNE (1946) (Revue)
Research Rank
1
Research Vol
Vol. 38, No. 12
Research Year
1983

Studies on side-chain Bromination and oxidation of 6-Bromo-2-Methyl-3-phenyl-4(3H)-Quinazolinone and Related Compounds

Research Authors
H.A.H. El-Sherief, G.M. El-Naggar, A.M. Mahmoud, H. Aref and K.Abdel Hamied
Research Department
Research Journal
Bull. Fac. Sci., Assiut Univ
Research Pages
pp. 49-60
Research Rank
1
Research Vol
Vol. 11, No. 1
Research Year
1982
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