488-16-4Relevant articles and documents
Kinetics and mechanism of Ru(III) and Hg(II) co-catalyzed oxidation of D-galactose and D-ribose by N-bromoacetamide in perchloric acid
Singh, Ashok Kumar,Singh, Vineeta,Singh, Ajaya Kumar,Gupta, Neena,Singh, Bharat
, p. 345 - 351 (2002)
Kinetics of oxidation of reducing sugars D-galactose (Gal) and D-ribose (Rib) by N-bromoacetamide (NBA) in the presence of ruthenium(III) chloride as a homogeneous catalyst and in perchloric acid medium, using mercuric acetate as a scavenger for Br-
Kinetic study of iridium(III) catalyzed oxidation of D-mannitol and erythritol by N-bromosuccinimide in acidic medium
Srivastava, Sheila,Gupta, Vandana
, p. 1103 - 1106 (2008/02/04)
Kinetic investigations on iridium trichloride catalyzed oxidation of D-mannitol and erythritol by acidic solution of N-bromosuccinimide (NBS) in the presence of mercuric acetate as a scavenger for Br- have been carried out in the temperature range 30-45 °C. The reactions follow identical kinetics. The rate shows a first-order dependence on [NBS] in lower concentration range which tends to zero-order at its higher concentrations. A first-order dependence on [IrIII] is also observed. Negligible effect of [substrate], [Hg(OAc)2] and ionic strength have been observed. Addition of [H+], [Cl-] and succinimide shows a negative effect. Activation parameters have been computed and a suitable mechanism conforming to above results has been proposed.
Ruthenium (III) catalysis of periodate oxidation of reducing sugars in aqueous alkaline medium
Singh, Ashok Kumar,Gupta, Neena,Rahmani, Shahla,Singh, Vinod Kumar,Singh, Bharat
, p. 1871 - 1875 (2007/10/03)
The ruthenium (III) catalysis of periodate oxidation of D-ribose, D-sorbose and maltose in aqueous alkaline medium has been investigated. The reactions have been found to be zero order with respect to each reducing sugar and first order with respect to ruthenium (III). The linear dependence of the reaction rate at lower concentrations of periodate ion and hydroxide ion tends towards zero order at their higher concentrations. Positive effect of [Cl -] on the rate of reaction has also been observed. The observed kinetics with periodate ion, under the conditions [IO4 -]〉〉[Ru(III)]T suggests the formation of a 1:1 complex between Ru(III) and periodate in the rate controlling step, which subsequently interacts with reactive species of reducing sugar to give the final products, through a series of fast steps. The rate law is derived.
