Synthesis of Silica-Supported Platinum(II) and Nickel(II) Complexes of Bis(Diphenylphosphinomethyl)Amino Ligand: Applications as Catalysts for the Synthesis of 2-Methyl-1,4-Naphthoquinone (Vitamin K-3)


URUŞ S., KELEŞ M., Serindag O.

JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS, cilt.20, ss.152-160, 2010 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 20 Konu: 1
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1007/s10904-010-9328-y
  • Dergi Adı: JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
  • Sayfa Sayıları: ss.152-160

Özet

Pt(II) and Ni(II) complexes of N,N-bis(diphenylphosphinomethyl)aminopropyltriethoxysilane [(CH3CH2O)(3)Si(CH2)(3)N(CH2PPh2)(2)] (DIPAPTES) and silica supported [SiO2-(DIPAPES)] ligands have been synthesized under nitrogen atmosphere using Schlenk method and characterized by using atomic absorption, FT-IR, NMR (H-1 and P-31) and elemental analysis techniques. All the complexes were used as catalysts for the oxidation of 2-methyl naphthalene (2MN) to 2-methyl-1,4-naphthoquinone (vitamin K-3, menadione, 2MNQ) using hydrogen peroxide as a clean and cheap oxidant. [Pt-(DIPAPTES)Cl-2] and supported complex [SiO2-(DIPAPES)-PtCl2] showed medium catalytic activity whereas Ni(II) complexes did not show any catalytic activity for the selective oxidation of 2-methyl naphthalene to 2-methyl-1,4-naphthoquinone.