Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Costas H. Issidorides"'
Publikováno v:
ChemInform. 24
Progress since 1976 in the chemistry of quinoxaline 1,4-dioxides, phenazine 9,10-dioxides and benzimidazole 1,3-dioxides is reviewed with special emphasis on the synthesis, via the Beirut reaction, of these products and their thermal and photochemica
Publikováno v:
HETEROCYCLES. 35:1503
Progress since 1976 in the chemistry of quinoxaline 1,4-dioxides, phenazine 9,10-dioxides and benzimidazole 1,3-dioxides is reviewed with special emphasis on the synthesis, via the Beirut reaction, of these products and their thermal and photochemica
Publikováno v:
Tetrahedron. 35:681-685
The reactions of benzofurazan oxide with diethylamine gave a complex mixture from which quinoxaline-1,4-dioxide (10–15%), o-benzoquinone dioxime (5%), benzofurazan (5–10%), 1-hydroxy-2-methyl-benzimidazole-3-oxide (3%), o-nitrosoaniline (5%), o-n
Publikováno v:
Tetrahedron. 34:217-221
Publikováno v:
Tetrahedron. 32:719-724
The reaction of benzofurazan oxide 1 with unsymmetrical 1,3-diketones 6a–6w gives isomeric quinoxaline-1,4-dioxides 7 and/or 8 . The regiospecificity of ring closure to 7 or 8 is influenced by steric and polar factors in the 1,3-diketone. Mechanist
Publikováno v:
Journal of Heterocyclic Chemistry. 18:655-658
The preparation of some functionalized quinoxaline 1,4-dioxides is described from the reaction of benzofurazan oxide with 2-acetylbutyrolactone, ethyl acetopyruvate, and acetylacetaldehyde dimethylacetal.
Publikováno v:
Tetrahedron. 30:659-666
The alkali induced deoxygenation of 3-(α-hydroxyalkyl)-quinoxaline-1-oxides is shown to be first order in substrate and in hydroxide ion. Examples are given to illustrate the synthetic utility of this reaction for the synthesis of quinoxaline and qu
Publikováno v:
The Journal of Organic Chemistry. 36:514-518
Autor:
Costas H. Issidorides, Musa Z. Nazer
Publikováno v:
The Journal of Organic Chemistry. 26:839-842
Publikováno v:
The Journal of Organic Chemistry. 27:67-70