GRATIS VERZENDING - GEEN MINIMALE AFNAME - VEILIG BETALEN - RUIME KEUZE - SCHERPE PRIJZEN

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Beschrijving

Pyridazine and pyrazole ring systems are known to possess potent biological and pharmacological properties. On the other hand some pyridazines derivatives are used as key starting material for the synthesis of commercial dyes. Acetylacetone, ethyl acetoacetate and malononitrile were coupled with diazotized arylamines to give arylazoacetylacetones, ethyl arylazoacetoacetates and arylazomalononitriles; these when refluxed with 5,6-diphenyl-2,3-dihydro-3-oxopyridazine-4-carbohydrazide, 3-amino-4,5-diphenyl-1H-pyrazolo[3,4-c]pyridazine and 3-hydrazino-4,5-diphenyl-1H-pyrazolo[3,4-c]pyridazine yielded the corresponding 4-[(3-arylazo-3,5-dimethylpyrazol-1-yl)carbonyl]-5,6-diphenylpyridazin-3(2H)-one, 7-arylazo-6-methyl-3,4-diphenylpyrimido[1`,2`:1,5]pyrazole[3,4-c]pyridazin-8(5H)-one and 2-(4,5-diphenyl-1H-pyrazolo[3,4-c]pyridazin-3-yl)-4-arylazo-1,2-dihydro-5-methyl-3H-pyrazol-3-one dyes respectively. The dyes were applied to polyester and polyamide fabrics, and their spectral and fastness properties measured.

Medewerkers

Auteur Ahmed A. M. Abdelgawad

Auteur Ali Deeb

Productdetails

DUIN 3B6BKD9J7IG

GTIN 9783659681110

Taal Engels

Pagina-aantallen 196

Product type Paperback

Maat 220 x 150  mm

New Monoazo Disperse Dyes from Pyridazine

Synthesis and Study of Dyeing Properties of some New Pyridazine Derivatives

Ahmed A. M. Abdelgawad

€ 68,08

Verkoper Dodax EU

Bezorgdatum: tussen dinsdag, 3. november en donderdag, 5. november

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