Kinetics and mechanism of oxidation of some hydroxy acids by N-bromoacetamide

Saxena, Madhu; Gupta, Ranjana; Singh, Bharat; Singh, Awatar

doi:10.1016/0304-5102(91)85068-d

Cited by 20 publications

(10 citation statements)

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“…NBA has been used as an oxidant for uncatalysed [8][9][10][11][12] and catalysed [13][14][15][16][17][18] reactions involving transition metals including Ru(III), Ir(III) and Pd(II) as homogeneous catalysts. The coordination chemistry of Rh(III) [19] has drawn considerable attention due to its chemical reactivity, anti-tumour activity, electronic structure and catalytic functions of its complexes with potential industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Kinetics of oxidation of d(+)melibiose and cellobiose by N-bromoacetamide using a rhodium(III) chloride catalyst

Singh

Srivastava

et al. 2010

Transition Met Chem

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The kinetics of oxidation of the sugars D(?)Melibiose (mel) and Cellobiose (cel) by N-bromoacetamide (NBA) in the presence of Rh(III) chloride as homogeneous catalyst in acidic medium at 45°C have been investigated. The reactions are first-order with respect to [NBA], [Rh(III)] and [substrate]. The rate is proportional to [H ? ]. No effects of [Hg(II)], [NHA] or [Cl -] on the rates were observed. Ionic strength and dielectric constant also have little effect. The observed kinetic data, available literature and spectroscopic evidence lead us to conclude that NBAH ? and [RhCl 5 (H 2 O)] 2-are the reactive species of NBA and Rh(III) chloride, respectively. The rate-determining step of the proposed reaction path common for both sugars gives an activated complex by the interaction of a charged complex species and neutral sugar molecule, which in the subsequent steps disproportionates into the reaction products with the regeneration of catalyst. The reactions have been studied at four different temperatures and with the help of first-order rate constant values, various activation parameters have been calculated. The main oxidation products of the reactions were identified as arabinonic acid, formic acid and lyxonic acid in the case of mel and arabinonic acid and formic acid in the case of cel.

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Section: Introductionmentioning

confidence: 99%

Kinetics of oxidation of d(+)melibiose and cellobiose by N-bromoacetamide using a rhodium(III) chloride catalyst

Singh

Srivastava

et al. 2010

Transition Met Chem

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“…It was reported 23,24,[34][35][36] that NBA existed in the following equilibrium in an acidic medium:…”

Section: Reactive Species Of Nbamentioning

confidence: 99%

Kinetics of the Oxidation of D‐Glucose and Cellobiose by Acidic Solution of N‐Bromoacetamide Using Transition Metal Complex Species, [RuCl₃(H₂O)₂OH] −, as Catalyst

et al. 2008

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“…Such a deficiency could interfere with normal muscle function. The presence of micelles can have marked effects on thermodynamic favorability and reaction kinetics as well as on many physical properties 1 . Organic reactions involving ionic, polar and neutral reactants in micellar solution are generally believed to occur in the stern layer of a micelle of an ionic surfactant.…”

Section: Introductionmentioning

confidence: 99%

Kinetics and Mechanism of Oxidation of Malic Acid by N-Bromonicotinamide (NBN) in the Presence of a Micellar System

Pushpalatha

2015

ILCPA

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Kinetics and mechanism of oxidation of some hydroxy acids by N-bromoacetamide

Cited by 20 publications

References 7 publications

Kinetics of oxidation of d(+)melibiose and cellobiose by N-bromoacetamide using a rhodium(III) chloride catalyst

Kinetics of oxidation of d(+)melibiose and cellobiose by N-bromoacetamide using a rhodium(III) chloride catalyst

Kinetics of the Oxidation of D‐Glucose and Cellobiose by Acidic Solution of N‐Bromoacetamide Using Transition Metal Complex Species, [RuCl₃(H₂O)₂OH] −, as Catalyst

Kinetics and Mechanism of Oxidation of Malic Acid by N-Bromonicotinamide (NBN) in the Presence of a Micellar System

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Kinetics and mechanism of oxidation of some hydroxy acids by N-bromoacetamide

Cited by 20 publications

References 7 publications

Kinetics of oxidation of d(+)melibiose and cellobiose by N-bromoacetamide using a rhodium(III) chloride catalyst

Kinetics of oxidation of d(+)melibiose and cellobiose by N-bromoacetamide using a rhodium(III) chloride catalyst

Kinetics of the Oxidation of D‐Glucose and Cellobiose by Acidic Solution of N‐Bromoacetamide Using Transition Metal Complex Species, [RuCl3(H2O)2OH] −, as Catalyst

Kinetics and Mechanism of Oxidation of Malic Acid by N-Bromonicotinamide (NBN) in the Presence of a Micellar System

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Kinetics of the Oxidation of D‐Glucose and Cellobiose by Acidic Solution of N‐Bromoacetamide Using Transition Metal Complex Species, [RuCl₃(H₂O)₂OH] −, as Catalyst