Science Journal of Chemistry

Volume 4, Issue 1, February 2016

  • Kinetic and Mechanism of Oxidation of Methylaminopyrazole Formamidine by Alkaline Hexacyanoferrate(III) and the Effect of Divalent Transition Metal Ions

    Ahmed Fawzy, Ishaq Zaafarany, Naeema Yarkandi, Ameena Al-Bonayan, Zakiya Almallah

    Issue: Volume 4, Issue 1, February 2016
    Pages: 1-8
    Received: Jan. 16, 2016
    Accepted: Jan. 25, 2016
    Published: Feb. 01, 2016
    Abstract: In aqueous alkaline medium, the kinetics of oxidation of methylaminopyrazole formamidine (MAPF) by hexacyanoferrate(III) (HCF)has been studied spectrophotometrically under the conditions, MAPF >> HCF at a constant ionic strength of 0.1 mol dm-3 and at 25°C. The reaction showed first order dependence on [HCF] while it exhibited fractional-first orde... Show More
  • Synthesis and Characterization of Non-linear 6, 8 and 9, 12-Dichloroazaphenothiazine Derivatives

    Ayuk Eugene Lakem, Nweke Cletus M., Agu Ifeoma S.

    Issue: Volume 4, Issue 1, February 2016
    Pages: 9-13
    Received: Nov. 25, 2015
    Accepted: Dec. 10, 2015
    Published: Mar. 02, 2016
    Abstract: The synthesis of non-linear diaza and tetraaza dichlorophenothiazine derivatives is reported in this article. This was achieved through the thiocyanation of 2,6-diamino-4-chloropyrimidine using potassium thiocyanate, bromine and glacial acetic acid at –5°C to give 2,6-diamino-3-thiocynatopyrimidine, which was hydrolyzed using 20% sodium hydroxide t... Show More