35015-94-2Relevant articles and documents
3-hydroxy-2-butanone-2,4-dinitrophenylhydrazone and method for detecting acetoin content in exhaled breath by using same
-
Paragraph 0039-0053, (2020/10/14)
The invention provides 3-hydroxyl-2-butanone-2,4-dinitrophenylhydrazone and a method for detecting acetoin content in exhaled breath by using the 3-hydroxyl-2-butanone-2,4-dinitrophenylhydrazone, andbelongs to the field of biochemical engineering. The inv
Kinetics and mechanism of the oxidation of diols by butyltriphenylphosphonium dichromate
Panday, Dinesh,Kothari, Seema
experimental part, p. 918 - 925 (2011/09/19)
The oxidation of four vicinal, four non-vicinal diols and one of their monoethers by butyltriphenylphosphonium dichromate (BTPPD), in dimethylsulfoxide (DMSO), resulted in the formation of corresponding hydroxyaldehyde as a main product of the oxidation. The reactions are of first order with respect to BTPPD, however, second order dependence is obtained with respect to each the diol and hydrogen ion. The oxidation of [1,1,2,2-2H 4]ethanediol exhibited primary kinetic isotope effect (k H/kD = 6.61 at 298 K). The temperature dependence of the kinetic isotope effect suggested the symmetrical transition state in the rate-determining step. The rate constants of oxidation of four vicinal diols show excellent correlation with Taft's ∑ σ* values with negative reaction constant, ρz.ast;. The rate of oxidation of ethanediol has been determined in nineteen different solvents. An analysis of the solvent effect indicates the importance of the cation-solvating power of the solvents. A suitable mechanism has been postulated involving the formation of chromate ester in a pre-equilibrium.
Revealing substrate promiscuity of 1-deoxy-D-xylulose 5-phosphate synthase
Brammer, Leighanne A.,Meyers, Caren Freel
supporting information; experimental part, p. 4748 - 4751 (2010/02/28)
A study of DXP synthase has revealed flexibility In the acceptor substrate binding pocket for nonpolar substrates and has uncovered new details of the catalytic mechanism to show that pyruvate can act as both donor and acceptor substrate.