首页|Synthesis and characterization of Merrifield resin-supported vanadium complexes for the catalytic oxidation of straight-chain aliphatic alcohols

Synthesis and characterization of Merrifield resin-supported vanadium complexes for the catalytic oxidation of straight-chain aliphatic alcohols

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  • Elsevier
Two Schiff-base ligands [hynd-ap] (I) and [hynd-ae] (II) were prepared by reacting 2-hydroxynapthaldehyde with 2-aminophenol and aminoethylethanolamine, respectively. By systematically using the prepared Schiff base ligands (I) and (II), a number of vanadium(IV) and (V) complexes were prepared and thoroughly characterized. Single crystal X-ray analysis, UV-Vis, FT-IR spectra and mass studies indicate that both the dioxidovanadium(V) complexes [VO2(hynd-ap)] (4) and [VO2(hynd-ae)] (5) exist in the monomeric form in the solid-state as well as in solution. The dioxidovanadium(V) complexes 4 and 5 were grafted on imidazole modified chloromethylated polystyrene, giving PS-im-[VO2(hynd-ap)] (6) and PS-im-[VO2(hynd-ae)] (7), for application in the catalytic oxidation of a series of primary aliphatic alcohols. Both the supported catalysts showed excellent catalytic performance towards this range of alcohols. A maximum of 98% substrate conversion to 1-proponal was observed in the presence of 6. Irrespective of the substrate, catalyst 6 shows better substrate conversion than 7 under the optimized reaction conditions. It has been observed that the catalytic performance of both the supported catalysts reduces slightly on increasing the number of carbon atoms in the alcohols, except for EtOH.

Vanadium complexMerrifield resinHeterogeneous catalysisSingle crystal XRDAlcohol oxidationSCHIFF-BASE COMPLEXESSELECTIVE OXIDATIONCRYSTAL-STRUCTUREOXOPEROXO-COMPLEXESHYDROGEN-PEROXIDEAEROBIC OXIDATIONCIS-CYCLOOCTENEEFFICIENTLIGANDSCOPPER(II)

Kesharwani, Neha、Haldar, Chanchal

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Indian Inst Technol

2022

10.1016/j.poly.2022.115787

Polyhedron

Polyhedron

CCREI
ISSN：0277-5387
年,卷(期)：2022.219
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