Bhunia, Susmita published the artcileCatalytic olefin epoxidation over cobalt(II)-containing mesoporous silica by molecular oxygen in dimethylformamide medium, Application In Synthesis of 57044-25-4, the publication is Catalysis Science & Technology (2014), 4(6), 1820-1828, database is CAplus.
A cobalt(II) Schiff base complex has been immobilized onto the surface of Si-MCM-41 to prepare a new catalyst. The amine group-containing organic moiety 3-aminopropyl-triethoxysilane had first been anchored on the surface of Si-MCM-41 via a silicon alkoxide route. Upon condensation with salicylaldehyde, the amine group affords a bidentate Schiff-base moiety in the mesoporous matrix, which is subsequently used for anchoring of cobalt(II) centers. The prepared catalyst has been characterized by UV-vis, IR, EPR spectroscopic and small angle X-ray diffraction (XRD) analyses, and N2 sorption studies. The catalytic activity was tested in epoxidation reactions of olefinic compounds, including styrene and allyl alc., with mol. oxygen at atm. pressure in DMF medium in the absence of addnl. sacrificial reductant. The reactions seemed to proceed through a radical formation mechanism. The immobilized catalyst showed good activity and epoxide selectivity in the alkene epoxidation Notably, the catalyst can be recovered and reused without any loss of activity.
Catalysis Science & Technology published new progress about 57044-25-4. 57044-25-4 belongs to alcohols-buliding-blocks, auxiliary class Epoxides,Chiral,Aliphatic hydrocarbon chain,Alcohol, name is (R)-Oxiran-2-ylmethanol, and the molecular formula is C3H6O2, Application In Synthesis of 57044-25-4.
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