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Aly H. Atta

Assiut University

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Heterocyclic Communications | 1999

Reactions of 1-(2-benzothiazolyl)-4-(dicyanomethylene)-3-methyl-2-pyrazolin-5-one towards Amines

Aly H. Atta

The reaction of 1-(2-Benzothiazolyl)-4-(dicyanomethylene)-3-methyl-2pyrazolin-5-one (1) with amines has been investigated. Primary and secondary amines react with (1) to yield 4-substituted(aminocyanomethylene)pyrazolone derivatives (4a-j) and (6a, b) respectively, o-substituted arylamines afford 4-azolylidene pyrazolone derivatives (8a, b) Tertiary amines (9a, b) adds to the dicyano derivative (1) by stirring in acetic acid solution and in exclusion of light to give adducts (10a, b) The latter products gave the condensation products (11a, b) by heating in DMF.

Synthesis | 1990

Synthesis of Various Pyrazolo[4′,3′ : 5,6]pyrano[3,2-e] [1,2,4]triazolo[1,5-c]pyrimidines and Pyrazolo[4″,3″ : 5′,6′]pyrano[2′,3′ : 4,5]pyrimido[1,6-b] [1,2,4]triazines

Mansour I. Younes; Saoud A. Metwally; Aly H. Atta

Collection of Czechoslovak Chemical Communications | 1991

Synthesis of 8,11-dihydro-10-methyl-8,11-diphenylpyrazolo[4’,3’:5,6]pyrano[3,2- e ][1,2,4]-triazolo[1,5- c ]pyrimidine and some derivatives

Maisa E. Abd Elmonem; Mansour I. Younes; Saoud A. Metwally; Aly H. Atta

Afinidad | 2009

Synthesis and Mass Spectral Fragmentation Patterns of some 2-Thiohydantoin, Salicyladazine and Pyradazine Derivatives

Aly H. Atta; Sahar S. El-Sakka

Heterocyclic Communications | 2000

REACTION OF 1-ACETYL-3-DICYANOMETHYLENE-1,3 - DIHYDRO-2H-INDOL-2-ONE WITH SOME NUCLEOPHILIC REAGENTS : SYNTHESIS OF SOME INDOL AND QUINOLINE DERIVATIVES

Moustafa F. Aly; Aly H. Atta; Mansour I. Younes

Heterocyclic Communications | 1998

Reactions with 6-amino-5-cyano-3-methyl-1,4-diphenyl-1H,4H-pyrano[2,3-c] - pyrazole- A novel synthesis of 4-arylidene-3-methyl-1-phenyl-2-pyrazolin-5-one derivatives

Aly H. Atta; Hamada H. Abdel-Razik; Ragab Faheim Fandy

Afinidad | 2009

Synthesis, biological activity and electron impact of mass spectra of trisubstituted-2-thiohydantoins

Aly H. Atta; Sahar S. El-Sakka; Mohamad Abd El-Meniem

Heterocyclic Communications | 1997

Addition and Cycloaddition Reactions with Pyrazole Blue

Moustafa F. Aly; Mansour I. Younes; Aly H. Atta; Saoud A. Metwally

Heterocyclic Communications | 1997

SYNTHESIS AND REACTIONS OF 1-ACETYL-3H-3(3'-METHYL-5'-OXO-1'-PHENYLPYRAZOLIDINE)-2H-INDOL-2-ON

Mamdouh A. Hassau; Aly H. Atta; Mansour I. Younes; Thana M. Talaat; Saoud A. Metwally

Heterocyclic Communications | 1996

PREPARATION AND REACTIONS OF 1,7-DHIYDRO-3,5-DIMETIIYL-4-NlTROPHENYL-1,7- DIPHENYLPYRANO[2,3-C:6,5-C]PYRAZOL-8-IUM PERCHLORATE

Aly H. Atta; Hussein H. Abbas; Mansour I. Younes; Saoud A. Mctwally

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Mansour I. Younes

Assiut University

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Saoud A. Metwally

Assiut University

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Moustafa F. Aly

Assiut University

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Sahar S. El-Sakka

Suez Canal University

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Maisa E. Abd Elmonem

Assiut University

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Saoud A.M. Metwally

United Arab Emirates University

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