Heterogeneous Catalytic Oxidative Bromination and Oxidation of Thioethers By Vanadium(IV) Oxido Complex of Benzoylacetone and Effect of Solid Supports

Kesharwani, Neha; Chaudhary, Nikita; Haldar, Chanchal

doi:10.1007/s10562-021-03594-9

Cited by 12 publications

(5 citation statements)

References 52 publications

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“…The reaction with only 1.2 equiv of DMP suggests that the in situ produced λ 3 -iodane, from the reduction of DMP, also participates in the oxidation process. The reaction in methanol clearly indicates that the reduced λ 3 -iodane from DMP can promote oxidation of thiol to disulfide and/or thiosulfonate (entry 6) It is also noteworthy that no over-oxidation products, i.e., sulfonyl sulfoxide 58 and/or disulfone, 59 were formed when higher equivalents of DMP (2.4 equiv) was employed (entry 4). Encouraged by the facile oxidation with DMP, the oxidation of thiophenols with IBX in common organic solvent was reinvestigated.…”

Section: Resultsmentioning

confidence: 99%

Oxidation of Thiols with IBX or DMP: One-pot Access to Thiosulfonates or 2-Iodobenzoates and Applications in Functional Group Transformations

Chandra

Yadav

Payra³

et al. 2023

Preprint

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Thiosulfonates are accessed by oxidation of feed-stock thiols using either DMP in DCM or IBX in MeCN at rt (~30 degree C). The protocol gives access to a variety of thiosulfonates in good to excellent yields from both aromatic and aliphatic thiols. The reaction with DMP is found to be better than IBX in terms of reaction rate and conversion, whereas the oxidation with DMP requires lower equivalent than IBX. Benzyl thiols are however found to follow a different reaction pathway when treated with DMP; O-benzyl esters of o-iodobenzoates were isolated. The 1H NMR spectroscopic monitoring studies for the IBX-mediated oxidation of thiol found disulfide as an initial intermediate, which is proposed to undergoes a cascade of oxidations to produce thiosulfonate

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Section: Resultsmentioning

confidence: 99%

Oxidation of Thiols with IBX or DMP: One-pot Access to Thiosulfonates or 2-Iodobenzoates and Applications in Functional Group Transformations

Chandra

Yadav

Payra³

et al. 2023

Preprint

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“…However homogenous complexes are reported to be more active for oxidation reaction than the encapsulated VO(IV) complexes. 56 Based on Kesharwani et al 57 findings, product selectivity and substrate conversion depend on the nature of solid support in a heterogeneous catalyst. Therefore, two heterogeneous catalysts from the vanadium(IV) oxido complex of 1-Phenyl-1,3-butanedione [V IV O(bzac)2] were supported on imidazole-modified polystyrene beads and APTMS modified graphene oxide while studying the effect (solid support) on oxidation of thioethers (catalyst 2: graphene oxide supported GO-APTMS-[V IV O(bzac)2] complex 12, catalyst 3: polymer anchored PS-im-[V IV O(bzac)2]) complex 13 (Fig.…”

Section: Oxidation Reactionsmentioning

confidence: 99%

Heterogeneous vanadium Schiff base complexes in catalytic oxidation reactions

Salubi¹

2023

10.5267/j.ccl

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The chemistry of Schiff base has received remarkable attention in different applications, both organic synthesis and industries. Over the past few years many reports have been on the synthesis, characterization and application of vanadium Schiff base complexes. However, heterogeneous vanadium Schiff base catalysts are active for various oxidation reactions, making catalytic oxidation of hydrocarbons a great interest. This review summarizes the recent development of organic substrate oxidation with heterogeneous vanadium Schiff base catalysts.

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“…Therefore, alternative materials are in need of study in order to overcome these limitations. [ 24–26 ]…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, alternative materials are in need of study in order to overcome these limitations. [24][25][26] Transition metal selenides (TMSes) have opened new research paradigms in the context of achieving promising results for electrocatalysis with characteristic reduced band edge that not only reduces the energy costs but also runs the process with faster kinetics. [27][28][29] The metal selenide has historically received a great deal of curiosity due to its variable structural features, elemental concentration, and electrical properties.…”

Section: Introductionmentioning

confidence: 99%

Recent Advancements in the Synthetic Mechanism and Surface Engineering of Transition Metal Selenides for Energy Storage and Conversion Applications

et al. 2023

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Novel catalytic materials are under investigation to find convincing energy alternatives. In this context, transition metal selenides (TMSes) are found to be feasible, ecofriendly, and effective electrocatalysts with futuristic characteristics. A deep and comprehensive investigation on metal selenides for energy conversion and storage application is summarized in this review article. Different methods such as hydrothermal, solvothermal, coprecipitation, hot injection, successive ionic layer adsorption reaction, polyol, and others can be used for the synthesis of metal selenides based electrocatalysts, with different morphologies and compositions. The morphology of metal selenides is strongly controlled by factors such as reaction time, temperature, pH of the reaction medium, and surfactant. The electrochemical applications of metal selenides are governed by morphology, active spots for reaction, surface engineering, and confinement. It is concluded that TMSes deliver high performance with large surface area, which is possible due to their porous or 3D morphology. The TMSes with multimetal or with doping metal/nonmetals perform better compared to single atoms. It is concluded that the reaction mechanism of hydrogen evolution reaction and oxygen evolution reaction is a primary tool to better understand the system to develop more efficient catalysts for practical application.

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Heterogeneous Catalytic Oxidative Bromination and Oxidation of Thioethers By Vanadium(IV) Oxido Complex of Benzoylacetone and Effect of Solid Supports

Cited by 12 publications

References 52 publications

Oxidation of Thiols with IBX or DMP: One-pot Access to Thiosulfonates or 2-Iodobenzoates and Applications in Functional Group Transformations

Oxidation of Thiols with IBX or DMP: One-pot Access to Thiosulfonates or 2-Iodobenzoates and Applications in Functional Group Transformations

Heterogeneous vanadium Schiff base complexes in catalytic oxidation reactions

Recent Advancements in the Synthetic Mechanism and Surface Engineering of Transition Metal Selenides for Energy Storage and Conversion Applications

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