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Salami, Rasool | 2009

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 42692 (03)
  4. University: Sharif University of Technology
  5. Department: Chemistry
  6. Advisor(s): Bagherzadeh, Reza
  7. Abstract:
  8. catalyzed oxidation of organic compounds such as olefins, sulfides, benzylics alcohols and phenolics. Cyanide-catalyzed aldimine coupling was employed to senthesize compounds with a-imineamine structural motifs : 2,3-di-(2-hydroxyphenyl)-1,2-dihydroquinoxaline, that way for synthesized NONO tetra-dentate Schiff-base ligands. With attention to solid geometry these ligands are possible to synthesize homo and hetronuclear mixed-ligand complexes. we are also synthesized homonuclear mixed-ligand Mn(III) and hetronuclear Mn(III)-Fe(III) with tetradentate Schiff-base ligand quinoxaline and acetyl acetone ligand. These complexes and ligands are characterized by FT-IR, 1H NMR, 13C NMR, UV and microanalysis (CHN). Their applications are consider as catalysts in oxidation of alcohols and sulfides. The select of suitable oxidant, best condition and consider effected the strong p-donor ligands such as imidazole used as axial ligand. We used a high-yeild(70-100%) oxidation procedure for the conversion of aliphatic and benzylic alcohols with various electron releasing and electron withdrawing substitutions and allylic alcohols to corresponding aldehydes and ketones by tetra(acetyl acetonato) quinoxalinemanganese(III) and tetra(acetylacetonato)quinoxalinemanganese(III)iron(III) complexes and sodium metaperiodate as an oxidant. In biphasic medium(CH2Cl2/H2O) using imidazole as axial ligand and tetrabutylammoniumbromide, n-Bu4NBr, as phase transfer agent at room temperature. The results shown the efficiency and reactivity of catalytic oxidation system are effectively effected when the strong p-donor ligands such as imidazole used as axial ligand
  9. Keywords:
  10. Sulfide Oxidation ; Tertiary Butylhydroperoxide (TBHP) ; Urea-Hydrogen Peroxide ; Benzimidazol ; Benzoxazoline ; Olefins Epoxidation

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