Add to ORKG947-951Quinoxaline 3A with ethyl bromoglyoxylate arylhydrazone 4 in the presence of triethylamine, gives a mixture of the pyrazolines 5A,6A and 7A whereas 3B gives the corresponding pyrazoles 5B, 6B and 7B
2371-2375A series of 1-[3'-amino-2'-methyl-6'-monosubstitutedquinazolin-4'(3'H)-onyl]-3-(arylideny ...
4-Methylphenylenediamine 1 was reacted with α-dicarbonylsto give quinoxalines 2a-g, 4a-d and/or 7a-c...
358-3626-Aminocoumarins 1a-c are refluxed with ethyl benzoylacetate 2 in toluene to give benzoyl-N-...
The present work reports the synthesis of 2-ary1—3—oxo-3—pyrazolino[3,4-b]quinoxalines for the firs...
Novel pyrazolo[1,5-a]-s-triazine, pyrazolo[1,5-c]-as-triazine, pyrazolo [1\u27,5\u27;1,2]imidazo[4,5...
A New Synthesis of Quinazolines. Part lll. Synthesis of 3 : 4-Quinazoloneylquinazolines
The diazonium salt of 3-(4-aminophenyl)-2-methyl-3H-quinazolin-4-one (2a) and its 6-bromo derivative...
4‐Phenyl‐2,3‐dioxobutyro‐1,4‐lactone (1) gave with phenylhydrazine and ils p‐Cl, p‐Br, p‐I and p‐NO2...
6-Nitroquinoxalines (I) are aminated by hydroxylamine to 5-amino-6-nitroquinoxalines (II). These are...
A series of quinoxaline derivatives has been synthesized by reacting 3-hydrazinoquinoxalines 1a,b wi...
Condensation of ethyl 2,4‐dioxo‐6‐phenylhex‐5‐enoates (I; R = H, I; R = Me, I, R = Ph) with various ...
The synthesis of 7-hydroxy-8-methoxy-(VI) and 7,8-dimethoxy-2-methyl-3-phenylquinazolin-4 (3H)-one (...
Department of Chemistry, Faculty of Science, University of Alexandria, Ibrahimia, P.O.Box 426, 21321...
Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt Manuscript received 4 Jun...
International audience2,3-Diphenylated quinoxaline, pyrido[2,3-b]pyrazine and 8-bromopyrido[3,4-b]py...
2371-2375A series of 1-[3'-amino-2'-methyl-6'-monosubstitutedquinazolin-4'(3'H)-onyl]-3-(arylideny ...
4-Methylphenylenediamine 1 was reacted with α-dicarbonylsto give quinoxalines 2a-g, 4a-d and/or 7a-c...
358-3626-Aminocoumarins 1a-c are refluxed with ethyl benzoylacetate 2 in toluene to give benzoyl-N-...
The present work reports the synthesis of 2-ary1—3—oxo-3—pyrazolino[3,4-b]quinoxalines for the firs...
Novel pyrazolo[1,5-a]-s-triazine, pyrazolo[1,5-c]-as-triazine, pyrazolo [1\u27,5\u27;1,2]imidazo[4,5...
A New Synthesis of Quinazolines. Part lll. Synthesis of 3 : 4-Quinazoloneylquinazolines
The diazonium salt of 3-(4-aminophenyl)-2-methyl-3H-quinazolin-4-one (2a) and its 6-bromo derivative...
4‐Phenyl‐2,3‐dioxobutyro‐1,4‐lactone (1) gave with phenylhydrazine and ils p‐Cl, p‐Br, p‐I and p‐NO2...
6-Nitroquinoxalines (I) are aminated by hydroxylamine to 5-amino-6-nitroquinoxalines (II). These are...
A series of quinoxaline derivatives has been synthesized by reacting 3-hydrazinoquinoxalines 1a,b wi...
Condensation of ethyl 2,4‐dioxo‐6‐phenylhex‐5‐enoates (I; R = H, I; R = Me, I, R = Ph) with various ...
The synthesis of 7-hydroxy-8-methoxy-(VI) and 7,8-dimethoxy-2-methyl-3-phenylquinazolin-4 (3H)-one (...
Department of Chemistry, Faculty of Science, University of Alexandria, Ibrahimia, P.O.Box 426, 21321...
Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt Manuscript received 4 Jun...
International audience2,3-Diphenylated quinoxaline, pyrido[2,3-b]pyrazine and 8-bromopyrido[3,4-b]py...
2371-2375A series of 1-[3'-amino-2'-methyl-6'-monosubstitutedquinazolin-4'(3'H)-onyl]-3-(arylideny ...
4-Methylphenylenediamine 1 was reacted with α-dicarbonylsto give quinoxalines 2a-g, 4a-d and/or 7a-c...
358-3626-Aminocoumarins 1a-c are refluxed with ethyl benzoylacetate 2 in toluene to give benzoyl-N-...