Selenium dioxide catalysed oxidation of acetic acid hydrazide by bromate in aqueous hydrochloric acid medium

Yalgudre, R S; Gokavi, Gavisiddappa S.

doi:10.1007/s12039-012-0286-5

Cited by 5 publications

(3 citation statements)

References 33 publications

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“…Selenium(IV) oxide-catalyzed oxidation of acetic acid hydrazide by bromate gives acetic acid as the oxidation product. Kinetic studies have shown that the reaction proceeds through formation of a complex between the catalyst and hydrazine which will be oxidized by the oxidant in a rate determining step [88]. Selenium(IV) oxide also catalyzes the oxidation of nicotinic acid hydrazide (NIH) by bromate in hydrochloric acid medium.…”

Section: Selenium(iv) Oxide and Selenic(iv) Acid As Oxidizing Agenmentioning

confidence: 99%

Developments in Synthetic Application of Selenium(IV) Oxide and Organoselenium Compounds as Oxygen Donors and Oxygen-Transfer Agents

2015

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A variety of selenium compounds were proven to be useful reagents and catalysts for organic synthesis over the past several decades. The most interesting aspect, which emerged in recent years, concerns application of hydroperoxide/selenium(IV) oxide and hydroperoxide/organoselenium catalyst systems, as "green reagents" for the oxidation of different organic functional groups. The topic of oxidations catalyzed by organoselenium derivatives has rapidly expanded in the last fifteen years This paper is devoted to the synthetic applications of the oxidation reactions mediated by selenium compounds such as selenium(IV) oxide, areneseleninic acids, their anhydrides, selenides, diselenides, benzisoselenazol-3(2H)-ones and other less often used other organoselenium compounds. All these compounds have been successfully applied for various oxidations useful in practical organic syntheses such as epoxidation, 1,2-dihydroxylation, and α-oxyfunctionalization of alkenes, as well as for ring contraction of cycloalkanones, conversion of halomethyl, hydroxymethyl or active methylene groups into formyl groups, oxidation of carbonyl compounds into carboxylic acids and/or lactones, sulfides into sulfoxides, and secondary amines into nitrones and regeneration of parent carbonyl compounds from their azomethine derivatives. Other reactions such as dehydrogenation and aromatization, active carbon-carbon bond cleavage, oxidative amidation, bromolactonization and oxidation of bromide for subsequent reactions with alkenes are also successfully mediated by selenium (IV) oxide or organoselenium compounds. The oxidation mechanisms of ionic or free radical character depending on the substrate and oxidant are discussed. Coverage of the literature up to early OPEN ACCESSMolecules 2015, 20 10206 2015 is provided. Links have been made to reviews that summarize earlier literature and to the methods of preparation of organoselenium reagents and catalysts.

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Section: Selenium(iv) Oxide and Selenic(iv) Acid As Oxidizing Agenmentioning

confidence: 99%

Developments in Synthetic Application of Selenium(IV) Oxide and Organoselenium Compounds as Oxygen Donors and Oxygen-Transfer Agents

2015

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“…It is also a photoconductor with a low melting point ( ca 217 °C), a high refractive index and strong reactivity, resulting in functional materials such as Ag 2 Se and CdSe, 33 ZnSe and PbSe 34 . In numerous organic reactions, selenium dioxide (SeO 2 ) works as both an oxidant and a catalyst 35 . Tung et al 36 .…”

Section: Introductionmentioning

confidence: 99%

“…34 In numerous organic reactions, selenium dioxide (SeO 2 ) works as both an oxidant and a catalyst. 35 Tung et al 36 used APS as an oxidizing agent to explore the effect of dopant concentration on the structure and characteristics of selenious acid-doped PANI (PANI-SA). Amarnath et al 37 utilized selenious acid as a dopant and APS as an oxidizing agent in a template-free method to produce PANI-SA nanostructures.…”

Section: Introductionmentioning

confidence: 99%

Selenious acid‐doped polyaniline synthesis and characterization by chemical oxidative solid‐state polymerization of aniline with SeO₂ as an oxidizing agent

Manimegalai

Dominic

Kumar

2021

Polymer International

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The current study describes a novel one‐step chemical oxidative solid‐state polymerization of aniline at room temperature using selenium dioxide. Selenium dioxide works as both oxidizing agent and dopant for the polymerization of aniline in solid‐state synthesis. The optimum polymerization conditions, such as reaction time and oxidant‐to‐monomer ratio, were investigated to synthesize selenious acid‐doped polyaniline (PANI‐SA) with high yield and conductivity. Various techniques were used to characterize the prepared PANI‐SA. The X‐ray diffraction pattern of PANI‐SA reveals that the polymer has an amorphous structure. The four‐probe method was used to measure conductivity. The conductivity increases as the oxidant mole ratio increases, but the conductivity decreases as the oxidant mole ratio increases further. Our results demonstrate that for a 24 h reaction time, an oxidant‐to‐monomer mole ratio of 1:1.5 leads to the highest conductivity of 0.488 S cm−1. © 2021 Society of Industrial Chemistry.

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Synthesis of Dendritic Ligand Assisted Zn/Cu Bimetallic Nanoparticles as a Highly Active Green Catalyst for Chemoselective Oxidation and Reduction Reaction

Islam

Khan

2020

Arab J Sci Eng

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Selenium dioxide catalysed oxidation of acetic acid hydrazide by bromate in aqueous hydrochloric acid medium

Cited by 5 publications

References 33 publications

Developments in Synthetic Application of Selenium(IV) Oxide and Organoselenium Compounds as Oxygen Donors and Oxygen-Transfer Agents

Developments in Synthetic Application of Selenium(IV) Oxide and Organoselenium Compounds as Oxygen Donors and Oxygen-Transfer Agents

Selenious acid‐doped polyaniline synthesis and characterization by chemical oxidative solid‐state polymerization of aniline with SeO₂ as an oxidizing agent

Synthesis of Dendritic Ligand Assisted Zn/Cu Bimetallic Nanoparticles as a Highly Active Green Catalyst for Chemoselective Oxidation and Reduction Reaction

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Selenium dioxide catalysed oxidation of acetic acid hydrazide by bromate in aqueous hydrochloric acid medium

Cited by 5 publications

References 33 publications

Developments in Synthetic Application of Selenium(IV) Oxide and Organoselenium Compounds as Oxygen Donors and Oxygen-Transfer Agents

Developments in Synthetic Application of Selenium(IV) Oxide and Organoselenium Compounds as Oxygen Donors and Oxygen-Transfer Agents

Selenious acid‐doped polyaniline synthesis and characterization by chemical oxidative solid‐state polymerization of aniline with SeO2 as an oxidizing agent

Synthesis of Dendritic Ligand Assisted Zn/Cu Bimetallic Nanoparticles as a Highly Active Green Catalyst for Chemoselective Oxidation and Reduction Reaction

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Selenious acid‐doped polyaniline synthesis and characterization by chemical oxidative solid‐state polymerization of aniline with SeO₂ as an oxidizing agent