Isoquinolinium bromochromate: An efficient and stable reagent for bromination of hydroxylated aromatic compounds and oxidation of alcohols

Khansole, Sandeep V.; Patwari, Shivaji B.; Vibhute, Archana Y.; Vibhute, Yeshwant B.

doi:10.1016/j.cclet.2008.11.015

Cited by 18 publications

(4 citation statements)

References 9 publications

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“…In redox reactions, chromium (VI) serves as an effective catalyst. A number of chromium(VI) oxidants, including pyridinium chlorochromate (1) , tributylammonium chlorochromate (2) , tripropylammonium fluorochromate (3) , pyridinium fluorochromate (4) , imidazolium fluorochromate (5) , and isoquinolinium bromochromate (6) , used for the oxidation process of various organic compounds. Several oxidants proposed as mechanistic studies for methionine oxidation (7)(8)(9)(10)(11)(12)(13)(14) .…”

Section: Introductionmentioning

confidence: 99%

EDAS and TOPSIS based Estimation of Oxidation of Methionine by Cr(VI) Reagents

Rao¹,

Kumar²

2021

IJST

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Objectives: To find the suitable solvent for the oxidation of methionine by Cr(VI) reagents using EDAS and TOPSIS method. Methods: When methionine oxidized by Cr(VI) complexes i.e. tetrakis(pyridine)silver dichromate (TPSD), quinolinium bromochromate (QBC), tetraethylammonium chlorochromate (TEACC) and quonilinium chlorochromate (QCC) formation of corresponding sulfoxide take place. Reaction performed in chloroform (CF), 1,2dichloroethane (DCE), dichloromethane (DCM), dimethylsulphoxide (DMSO) and acetone solvents. Findings: Reaction is fastest in DMSO and slowest in acetone for the oxidation of methionine in the following-DMSO, DCE, DCM, acetone, CF. Novelty: Solvent effect is investigated using the rate constant k 2, by EDAS and TOPSIS methods.

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Section: Introductionmentioning

confidence: 99%

EDAS and TOPSIS based Estimation of Oxidation of Methionine by Cr(VI) Reagents

Rao¹,

Kumar²

2021

IJST

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“…Therefore, synthetic organic chemists pay attention to search for new oxidizing reagents [1]. In recent years, extensive works have led to the development of a good number of chromium(VI) oxidizing agents such as isoquinolinium fluorochromate [2], tetramethylammonium fluorochromate [3], isoquinolinium bromochromate [4], tetrahexylammonium bromochromate [5], tributylammonium chlorochromate [6] and tetrabutylammonium bromochromate [7] to study the oxidation of various organic compounds.…”

Section: Introductionmentioning

confidence: 99%

Kinetics and Thermodynamics of Oxidation of Some para-Substituted 4-Oxo-4-phenyl Butanoic Acids by Tripropylammonium Fluorochromate in Aqueous Acetic Acid Medium

Yogananth¹,

Asghar²,

Mansoor³

2017

Asian J. Chem.

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4-oxo acids by tripropylammonium fluorochromate (TriPAFC) in aqueous acetic acid medium in the presence of perchloric acid have been described. The reaction is first order with respect to 4-oxo acid, TriPAFC and perchloric acid. The order of reactivity among the studied 4-oxoacids is:The effect of changes on the electronic nature of the substrate reveals that there is a development of positive charge in the transition state. The activation parameters have been computed from Arrhenius and Eyring plots. Based on the kinetic results, a suitable mechanism has been proposed.

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“…Quinolinium chlorochromate(QCC) is a mild and selective oxidant. Quinolinium chlorochromate 14 is a stable reagent originally introduced as an oxidizing agent for alcohol is used in synthetic organic chemistry [15][16][17][18][19][20] .…”

Section: Introductionmentioning

confidence: 99%

Reactivity of Phenol and Aniline towards Quinolinium Chloro Chromate: A Comparative Oxidation Kinetic Study

Periyasamy

Hussain

Manikandan

2015

ILCPA

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The kinetics of Oxidation of Phenol and aniline by quinolinium Chlorochromate (QCC) in aqueous acetic acid medium leads to the formation of quinone and azobenzene respectively. The reactions are first order with respect to both Phenol and aniline. The reaction is first order with respect to quinolinium chlorochromate (QCC) and is catalyzed by hydrogen ion. The hydrogen-ion dependence has the form: kobs = a+b [H+]. The rate of oxidation decreases with increasing dielectric constant of solvent, indicating the presence of an ion-dipole interaction. The reaction does not induced the polymerization of acrylonitrile. The retardation of the rate by the addition of Mn2+ ions confirms that a two electron transfer process is involved in the reaction. The reaction rates have been determined at different temperatures and the activation parameters have been calculated. From the above observations kinetic results a probable mechanism have been proposed.

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Isoquinolinium bromochromate: An efficient and stable reagent for bromination of hydroxylated aromatic compounds and oxidation of alcohols

Cited by 18 publications

References 9 publications

EDAS and TOPSIS based Estimation of Oxidation of Methionine by Cr(VI) Reagents

EDAS and TOPSIS based Estimation of Oxidation of Methionine by Cr(VI) Reagents

Kinetics and Thermodynamics of Oxidation of Some para-Substituted 4-Oxo-4-phenyl Butanoic Acids by Tripropylammonium Fluorochromate in Aqueous Acetic Acid Medium

Reactivity of Phenol and Aniline towards Quinolinium Chloro Chromate: A Comparative Oxidation Kinetic Study

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