• Title/Summary/Keyword: N-arylmaleimide

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Polymeric Dyes Based on Thiadiazole Derivatives

  • Maradiya, Hari-Raghav;Patel, Vithal-Soma
    • Fibers and Polymers
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    • v.2 no.4
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    • pp.212-220
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    • 2001
  • A series of polymeric dyes wre synthesized by free radical addition polymerication of monomeric dyes. The 2-amino-5-mrecapto-1,3,4-thiadiazole was diazotized and coupled with various N-arlmaleimides to give monomeric dyes. All the polymeric dyes were characterized by elemental analysis, infrared spectroscopy, visible absorption spectroscopy, viscometry. and thermogravimetric analysis. Color and dyeing properties of the polymeric dyes were discussed by comparing them with those of the corresponding monomeric dyes. The dyeing performance of these dyes was assessed on nylon fiber. These dyes were found to give various color shades with good to very good depth and levelness on the fiber. The dyeing of the monomeric dyes showed moderate fastness to light and good to excellent fastness properties. The dyebath exhaustion and fixation on nylon fiber has been found to be good.

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Synthesis of Several New Isoxazole, Imidazo[1, 2-a]pyridine, Imidazo[1, 2-a]pyrimidine, Benzoxadiazine and Benzothiazine Derivatives from Hydroximoyl Halides

  • Abdelhamid, Abdou O.;Abdou, Sadek E.;Mahgoub, Sayed A.
    • Archives of Pharmacal Research
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    • v.15 no.4
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    • pp.317-321
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    • 1992
  • Furoyldroximoyl chloride 3d reacted with 2-aminopyridine, 2-aminopyrimidine. O-aminophenol, O-phenylenediamine and aminothiophenol to afford imidazo [1, 2-a]pyridine 6. imidazo[1, 2-a]pyrimidine 8, benzoxadiazine 10, nitrosobenzopyrizine 13a and nitrosobenzothiazine 13b, respectively. Isoxazoline 18 and pyrrolidino[3, 4-d]isoxazolin-4, 6-dione derivatives 19a and 19b obtained by the reaction of 3 with acrylonitrile and N-arylmaleimide. Hydroximoyl chloride 3 reacted with thiophenol and sodium benzene-sulfinate to yield furylglyoxaloxime 16a and 16b, respectively. Hydroximoyl chloride 3 reacted also with some active methylene compound to give isoxazole derivatives 20-23, respectively.

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