Iron Oxide-Cobalt Nanocatalyst for O-tert-Boc Protection and O-Arylation of Phenols.
Vilas B GadeAnandarup GoswamiRajender S VarmaSharad N ShelkeManoj B GawandePublished in: Nanomaterials (Basel, Switzerland) (2018)
Efficient and general protocols for the O-tert-boc protection and O-arylation of phenols were developed in this paper using a recyclable magnetic Fe₃O₄-Co₃O₄ nanocatalyst (Nano-Fe-Co), which is easily accessible via simple wet impregnation techniques in aqueous mediums from inexpensive precursors. The results showed the catalysts were well characterized by XRD (X-ray Diffraction), ICP-AES (Inductive Coupled Plasma Atomic Emission Spectroscopy), TEM (Transmission Electron Microscopy), TOF-SIMS (Time-Of-Flight Secondary Ion Mass Spectrometry) and XPS (X-ray Photoelectron Spectroscopy). The O-tert-boc protection and O-arylation of phenols was accomplished in good to excellent yields (85–95%) and the catalyst was reusable and recyclable with no loss of catalytic activity for at least six repetitions.
Keyphrases
- high performance liquid chromatography
- electron microscopy
- mass spectrometry
- high resolution
- liquid chromatography
- metal organic framework
- iron oxide
- gas chromatography
- ms ms
- highly efficient
- ionic liquid
- single molecule
- solid state
- reduced graphene oxide
- room temperature
- magnetic resonance
- magnetic resonance imaging
- visible light
- gold nanoparticles
- dual energy