title: Eco-Friendly Synthesis of Some Thiosemicarbazones and Their Applications as Intermediates for 5-Arylazothiazole Disperse Dyes.
abstract: The solid-solid reactions of thiosemicarbazide with 4-formylantipyrine, 2-acetylpyrrole and camphor were performed to afford the thiosemicarbazones 1-3 which underwent hetero-cyclization with phenacyl bromide to furnish the corresponding thiazole derivatives 4-6. The yields of the reactions are quantitative in all cases and the products do not require further purification. A series of 5-arylazo-2-(substituted ylidene-hydrazinyl)-thiazole dyes 7-9 was then prepared by diazo coupling of thiazole derivatives 4-6 with several diazonium chlorides. The synthesized dyes were applied as disperse dyes for dyeing polyester fabric. The dyed fabrics exhibit good washing, perspiration, sublimation and light fastness properties, with little variation in their moderate to good rubbing fastness.
authors.affiliation: Textile Research Division, National Research Center, Dokki 12622, Egypt. hatem197@yahoo.com.
authors.forename: Hatem E
authors.initials: HE
authors.lastname: Gaffer
authors.affiliation: Department of Chemistry, Faculty of Science, Taif University, P. O. Box 888, Taif 21974, Saudi Arabia. mohamedezzat200@hotmail.com.|Department of Chemical Engineering, Higher Institute for Engineering and Technology, Central Zone, 4th District, New Damietta, Damietta, Egypt. mohamedezzat200@hotmail.com.
authors.forename: Mohamed E
authors.initials: ME
authors.lastname: Khalifa
mesh_terms: D004396:Coloring Agents / Q000138:chemical synthesis*; D055772:Green Chemistry Technology; D013844:Thiazoles / Q000138:chemical synthesis*; D013882:Thiosemicarbazones / Q000138:chemical synthesis*
chemical_list: D004396:Coloring Agents; D013844:Thiazoles; D013882:Thiosemicarbazones
keywords: 5-arylazothiazoles; disperse dyes; fastness properties.; phenacyl bromide; solid-solid reactions; thiosemicarbazones