Polymer-anchored vanadium(IV), molybdenum(VI) and copper(II) complexes of bidentate ligand as catalyst for the liquid phase oxidation of organic substrates

Maurya, Mannar R.; Kumar, Mukesh; Kumar, Umesh

doi:10.1016/j.molcata.2007.03.074

Cited by 64 publications

(8 citation statements)

References 52 publications

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“…The selective oxidation of styrene to benzaldehyde was carried out with Schiff base complex as catalyst using tert-butylhydroperoxide 100% conversion was obtained. Production of benzaldehyde in the oxidation of styrene may be due to the further oxidation of the epoxide formed with the tert-butylhydroperoxide (Maurya et al, 2007;Heshmatpour et al, 2012). The styrene conversion was found to be strongly dependent on the solvent nature and maximum conversion was obtained in the chloroform.…”

Section: Oxidation Of Organic Compoundsmentioning

confidence: 99%

A review on versatile applications of transition metal complexes incorporating Schiff bases

Abu‐Dief

Mohamed

2015

Beni-Suef University Journal of Basic and Applied Sciences

451

270

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Antimicrobial Dyes Polymers a b s t r a c t Schiff bases and their complexes are versatile compounds synthesized from the condensation of an amino compound with carbonyl compounds and widely used for industrial purposes and also exhibit a broad range of biological activities including antifungal, antibacterial, antimalarial, antiproliferative, anti-inflammatory, antiviral, and antipyretic properties. Many Schiff base complexes show excellent catalytic activity in various reactions and in the presence of moisture. Over the past few years, there have been many reports on their applications in homogeneous and heterogeneous catalysis. The high thermal and moisture stabilities of many Schiff base complexes were useful attributes for their application as catalysts in reactions involving at high temperatures. The activity is usually increased by complexation therefore to understand the properties of both ligands and metal can lead to the synthesis of highly active compounds. The influence of certain metals on the biological activity of these compounds and their intrinsic chemical interest as multidentate ligands has prompted a considerable increase in the study of their coordination behaviour. Development of a new chemotherapeutic Schiff bases and their metal complexes is now attracting the attention of medicinal chemists. This review compiles examples of the most promising applied Schiff bases and their complexes in different areas.

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Section: Oxidation Of Organic Compoundsmentioning

confidence: 99%

A review on versatile applications of transition metal complexes incorporating Schiff bases

Abu‐Dief

Mohamed

2015

Beni-Suef University Journal of Basic and Applied Sciences

451

270

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“…We conclude that the catalyst is purely heterogeneous in nature. Comparison of the catalytic activity of PS-(PBIM) 2 Cu(II) with other reported systems (Table 4) Scheme 2 Plausible reaction mechanism for the oxidation of styrene reveals that the present catalyst exhibits higher conversion and selectivity compared to other systems [24][25][26][27][28][29][30][31][32][33].…”

Section: Heterogeneity and Recycling Testsmentioning

confidence: 93%

Liquid-phase catalytic oxidation of organic substrates by a recyclable polymer-supported copper(II) complex

Shilpa

Gayathri

2013

Transition Met Chem

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Chloromethylated polystyrene beads crosslinked with 6.5 % divinylbenzene were functionalized with 2-(2 0 -pyridyl) benzimidazole (PBIMH) and on subsequent treatment with Cu(OAc) 2 in methanol gave a polymersupported diacetatobis(2-pyridylbenzimidazole)copper(II) complex [PS-(PBIM) 2 Cu(II)], which was characterized by physicochemical techniques. The supported complex showed excellent catalytic activity toward the oxidation of industrially important organic compounds such as phenol, benzyl alcohol, cyclohexanol, styrene, and ethylbenzene. An effective catalytic protocol was developed by varying reaction parameters such as the catalyst and substrate concentrations, reaction time, temperature, and substrateto-oxidant ratio to obtain maximum selectivity with high yields of products. Possible reaction mechanisms were worked out. The catalyst could be recycled five times without any metal leaching or much loss in activity. This catalyst is truly heterogeneous and allows for easy work up, as well as recyclability and excellent product yields under mild conditions.

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“…However, this could be located at ı = 51.0 ppm in CDCl 3 . [42]. The oxidation of styrene, catalyzed by polymer supported complex PS-[Mo VI O 2 (hap-iah)(MeOH)] (2), using aqueous 30% H 2 O 2 as oxidant did not proceed.…”

Section: H and 13 C Nmr Studiesmentioning

confidence: 98%

Sodium bicarbonate assisted oxidation, by H2O2, of styrene and cyclohexene using polymer grafted dioxidomolybdenum(VI) complex as a catalyst

Maurya

Kumar

2015

Journal of Molecular Catalysis A: Chemical

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Polymer-anchored vanadium(IV), molybdenum(VI) and copper(II) complexes of bidentate ligand as catalyst for the liquid phase oxidation of organic substrates

Cited by 64 publications

References 52 publications

A review on versatile applications of transition metal complexes incorporating Schiff bases

A review on versatile applications of transition metal complexes incorporating Schiff bases

Liquid-phase catalytic oxidation of organic substrates by a recyclable polymer-supported copper(II) complex

Sodium bicarbonate assisted oxidation, by H2O2, of styrene and cyclohexene using polymer grafted dioxidomolybdenum(VI) complex as a catalyst

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