Kinetic study of the acid catalyzed chromium(VI) oxidation of the methyl group. Oxidation of 3-picoline-1-oxide and 4-nitro-3-picoline-1-oxide

1972 ◽  
Vol 37 (20) ◽  
pp. 3063-3066 ◽  
Author(s):  
Albrecht. Granzow ◽  
Abraham. Wilson
Keyword(s):  
Kinetic Study ◽  
Methyl Group ◽  
Chromium Vi ◽  
Acid Catalyzed ◽  
Methyl Group Oxidation

Benzyl ethers of methyl α-D-glucopyranoside

1980 ◽  
Vol 45 (7) ◽  
pp. 1959-1963 ◽  
Author(s):  
Dušan Joniak ◽  
Božena Košíková ◽  
Ludmila Kosáková
Keyword(s):  
Kinetic Study ◽  
Spectrophotometric Determination ◽  
Reductive Cleavage ◽  
Ether Bond ◽  
Benzyl Ethers ◽  
Acid Catalyzed ◽  
Model Substances ◽  
Hydrolysis Of

Methyl 4-O-(3-methoxy-4-hydroxybenzyl) and methyl 4-O-(3,5-dimethoxy-4-hydroxybenzyl)-α-D-glucopyranoside and their 6-O-isomers were prepared as model substances for the ether lignin-saccharide bond by reductive cleavage of corresponding 4,6-O-benzylidene derivatives. Kinetic study of acid-catalyzed hydrolysis of the compounds prepared was carried out by spectrophotometric determination of the benzyl alcoholic groups set free, after their reaction with quinonemonochloroimide, and it showed the low stability of the p-hydroxybenzyl ether bond.

Kinetic study of chromium(VI) facilitated transport through a bulk liquid membrane using tri-n-butyl phosphate as carrier

2009 ◽  
Vol 150 (1) ◽  
pp. 83-89 ◽  
Author(s):  
Weidong Zhang ◽  
Junteng Liu ◽  
Zhongqi Ren ◽  
Shuguang Wang ◽  
Changshun Du ◽  
...  
Keyword(s):  
Kinetic Study ◽  
Liquid Membrane ◽  
Facilitated Transport ◽  
Bulk Liquid ◽  
Bulk Liquid Membrane ◽  
Chromium Vi

scholarly journals Evidence for metabolism of o-xylene by simultaneous ring and methyl group oxidation in a new soil isolate

Microbiology ◽  
1997 ◽  
Vol 143 (7) ◽  
pp. 2321-2329 ◽  
Author(s):  
S. R. Bickerdike ◽  
R. A. Holt ◽  
G. M. Stephens
Keyword(s):  
Methyl Group ◽  
Soil Isolate ◽  
Methyl Group Oxidation

Deuterium exchange of C-methyl protons in lumazine derivatives

1970 ◽  
Vol 48 (2) ◽  
pp. 263-270 ◽  
Author(s):  
J. M. McAndless ◽  
Ross Stewart
Keyword(s):  
Proton Magnetic Resonance ◽  
Proton Magnetic Resonance Spectroscopy ◽  
Acid Catalysis ◽  
Deuterium Exchange ◽  
Base Catalysis ◽  
Resonance Spectroscopy ◽  
Methyl Group ◽  
General Base ◽  
General Acid ◽  
Acid Catalyzed

Proton magnetic resonance spectroscopy has been used to examine the deuterium exchange of the methyl protons in two lumazine derivatives. The exchange occurs at the C-7 methyl group in 6,7,8-trimethyllumazine (2) and at the C-6 methyl group in 1,7-dihydro-6,7,8-trimethyllumazine (3). The former reaction is subject to both general acid- and general base-catalysis but the latter only to general acid-catalysis. Plausible mechanisms for the reactions of both compounds are advanced, involving in the case of 3, acid-catalyzed addition of water across the C6—N5 double bond.

scholarly journals Theoretical kinetic study of the formic acid catalyzed Criegee intermediate isomerization: multistructural anharmonicity and atmospheric implications

2018 ◽  
Vol 20 (16) ◽  
pp. 10806-10814 ◽  
Author(s):  
M. Monge-Palacios ◽  
Matti P. Rissanen ◽  
Zhandong Wang ◽  
S. Mani Sarathy
Keyword(s):  
Carbon Atom ◽  
Formic Acid ◽  
Kinetic Study ◽  
Theoretical Study ◽  
Isomerization Reaction ◽  
Hydrogen Shift ◽  
Acid Catalyzed ◽  
Double Hydrogen

We performed a theoretical study on the double hydrogen shift isomerization reaction of a six carbon atom Criegee intermediate (C6-CI), catalyzed by formic acid (HCOOH), to produce vinylhydroperoxide (VHP), C6-CI + HCOOH → VHP + HCOOH.

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