Zobrazeno 1 - 10
of 42
pro vyhledávání: '"M. M. Girges"'
Publikováno v:
ChemistrySelect. 5:3075-3079
Publikováno v:
Journal of Saudi Chemical Society, Vol 20, Iss 2, Pp 151-157 (2016)
A series of thiophene incorporating pyrazolone moieties 5a–f and 6a–c were synthesized via diazo coupling of diazonium salt of 3-substituted-2-amino-4,5,6,7-tetrahydrobenzo[b]thiophenes 1a–c with 3-methyl-1H-pyrazol-5(4H)-one, 3-methyl-1-phenyl
Publikováno v:
European Journal of Chemistry. 5:595-600
A few new sulphadimidine incorporating thiophene moiety are synthesized. These compounds were assessed by analytical and spectral data. Antioxidant evaluation for the investigated compounds was evaluated by ABTS assay and bleomycin-dependent DNA-dama
Publikováno v:
Journal of Chemical Technology & Biotechnology. 44:299-308
Different heterocyclic Hansa Yellow analogues were synthesized from 3-oxo-N-(pyrazol-4-yl)butanamide for possible use as azodisperse dyes for dyeing polyester fibres. The free energy relationship between the position of absorption of these dyes-λ-an
Publikováno v:
Journal of Chemical Technology & Biotechnology. 55:9-16
The condensation reaction of pyridine-carboxylic acid hydrazides IIa-d with ethyl butanoylacetate was selectively used to synthesize new azo-disperse dyes embodying a pyrazolone moiety with a view to evaluating and comparing their dyeing performance
Publikováno v:
Journal of Chemical Technology & Biotechnology. 52:559-570
In a four-step synthesis, a series of N-arylideneamino p-substituted pyridinium salt derivatives were prepared for use as cationic azomethine disperse dyes for polyester and polyacrylonitrile fibres. The effect of different substituents, in both of h
Publikováno v:
Synthetic Communications. 37:1313-1319
A combination of tetrachlorosilane and potassium cyanide (in situ trichlorosilyl cyanide) was found to work efficiently for hydrocyanation of ketones to afford the corresponding cyanohydrins in high yield under mild conditions.
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 179:1577-1593
Benzo[1,2-b:5,4-b′]difuran-2-carbohydrazides 5a, b were reacted with aryl or alkyl isothiocyanates to give the corresponding thiosemicarbazides 6a–h. Cyclization of the substituted thiosemicarbazides with sodium hydroxide led to the formation of
Publikováno v:
Tetrahedron Letters. 38:1071-1074
The successive reactions of some cyclic ketones with aryl methyl ketones mediated by tetrachlorosilane-ethanol, provide an attractive and convenient route to branched functionalized benzenoid compounds. Selective unsymmetrical branched triarylbenzene
Publikováno v:
Medicinal Chemistry.
A series of aryl azonaphthoquinones 8a-e were obtained via coupling of the corresponding diazonium salts 7a-c with naphthoquinones 2 or 3 in pyridine. Moreover, treatment of 5 with 6a, b in ethanol containing potassium carbonate afforded the correspo