Is pseudorotation the operational pathway for bond shifting within [8]annulenes? Probe of planarization requirements by 1,3-annulation of the cyclooctatetraene ring. Kinetic analysis of racemization and 2-D NMR quantitation of .pi.-bond alternation and ring inversion as a function of polymethylene chain length

1990 ◽  
Vol 112 (1) ◽  
pp. 239-253 ◽  
Author(s):  
Leo A. Paquette ◽  
Ting Zhong Wang ◽  
Jihmei Luo ◽  
Charles E. Cottrell ◽  
Amy E. Clough ◽  
...  
Keyword(s):  
Kinetic Analysis ◽  
Chain Length ◽  
Ring Inversion ◽  
Polymethylene Chain ◽  
Bond Alternation

scholarly journals Effects of isoleucine 135 side chain length on the cofactor donor-acceptor distance within F420H2:NADP+ oxidoreductase: A kinetic analysis

2017 ◽  
Vol 9 ◽  
pp. 114-120 ◽  
Author(s):  
Cuong Quang Le ◽  
Mercy Oyugi ◽  
Ebenezer Joseph ◽  
Toan Nguyen ◽  
Md Hasmat Ullah ◽  
...  
Keyword(s):  
Kinetic Analysis ◽  
Chain Length ◽  
Side Chain ◽  
Side Chain Length ◽  
Donor Acceptor

Steric effects of polymethylene chain length on the liquid-liquid extraction of copper(II) with bis(4-acylpyrazol-5-one) derivatives

1989 ◽  
Vol 28 (15) ◽  
pp. 3014-3017 ◽  
Author(s):  
Shoji Miyazaki ◽  
Hiroshi Mukai ◽  
Shigeo Umetani ◽  
Sorin Kihara ◽  
Masakazu Matsui
Keyword(s):  
Chain Length ◽  
Liquid Extraction ◽  
Steric Effects ◽  
Polymethylene Chain ◽  
Liquid Liquid Extraction

Steric effects of polymethylene chain length on the liquid-liquid extraction of Ni(II) and Zn(II) with bis(4-acylpyrazol-5-one) derivatives in the presence or absence of tri-n-octylphosphine oxide

1991 ◽  
Vol 249 (2) ◽  
pp. 525-532 ◽  
Author(s):  
Shoji Miyazaki ◽  
Hiroshi Mukai ◽  
Shigeo Umetani ◽  
Sorin Kihara ◽  
Masakazu Matsui
Keyword(s):  
Chain Length ◽  
Liquid Extraction ◽  
Steric Effects ◽  
Polymethylene Chain ◽  
Liquid Liquid Extraction

Novel polyfluoroalkylated pyrazoles from 2-polyfluoroacylcycloalkanones and hydrazines: syntheses and unequivocal molecular structure assignment

2001 ◽  
Vol 79 (2) ◽  
pp. 183-194 ◽  
Author(s):  
D V Sevenard ◽  
O G Khomutov ◽  
M I Kodess ◽  
K I Pashkevich ◽  
I Loop ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Chain Length ◽  
Tautomeric Form ◽  
Ring Size ◽  
Polymethylene Chain ◽  
Structure Assignment ◽  
Substituted Hydrazines

The reaction between 2-trifluoroacetylcycloalkanones and methylhydrazine or phenylhydrazine exclusively yields 3-CF3-pyrazoles. When the chain length of the polyfluorinated substituent in RFC(O) group increases, 5-RF-pyrazoles are isolated. The reaction of 2-trifluoroacetylcyclohexanone with 2-hydrazinopyradine gives 5-hydroxypyrazoline, an intermediate in the formation of 5-CF3-pyrazoles. The regiochemistry of the condensation is probably controlled by the nucleophilicity of the terminal nitrogen in the mono substituted hydrazines and by the steric requirements of the RF group in the 1,3-diketones. Polymethylene chain containing pyrazoles obtained from the 1,3-diketones in question and hydrazine prefer the 3-RF tautomeric form, irrespective of carbocyclic ring size and polyfluoroalkyl group chain length.Key words: polyfluorinated 1,3-diketones, hydrazines, isomeric pyrazoles, molecular structure.

Steric effects of polymethylene chain length on the liquid-liquid extraction of Be(II), Sc(III) and Y(III) with bis(4-acylpyrazol-5-one) derivatives

1992 ◽  
Vol 259 (1) ◽  
pp. 25-32 ◽  
Author(s):  
Shoji Miyazaki ◽  
Hiroshi Mukai ◽  
Shigeo Umetani ◽  
Sorin Kihara ◽  
Masakazu Matsui
Keyword(s):  
Chain Length ◽  
Liquid Extraction ◽  
Steric Effects ◽  
Polymethylene Chain ◽  
Liquid Liquid Extraction

Satiation in humans is modulated by fatty acid chain length

2001 ◽  
Vol 120 (5) ◽  
pp. A710-A710
Author(s):  
S LAL ◽  
J MCLAUGHLIN ◽  
O NIAZ ◽  
G DOCKRAY ◽  
A VARRO ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Chain Length ◽  
Fatty Acid Chain Length ◽  
Fatty Acid Chain

Kinetic Aspects of the Interaction of Blood Clotting Enzymes

1965 ◽  
Vol 13 (01) ◽  
pp. 155-175 ◽  
Author(s):  
H. C Hemker ◽  
P.W Hemker ◽  
E. A Loeliger
Keyword(s):  
Kinetic Analysis ◽  
Enzyme Kinetics ◽  
Blood Clotting ◽  
Enzyme System ◽  
Enzyme Kinetic ◽  
Clotting Time ◽  
Standard Methods

SummaryApplication of the methods of enzyme-kinetic analysis to the results of clotting tests is feasible and can yield useful results. However, the standard methods of enzyme kinetics are not applicable without modifications imposed by the peculiarities of the blood-clotting enzyme system. The influence of the following complicating circumstances is calculated :1. Substrate is not present in excess.2. Only relative measures exist for concentrations of substrate or enzymes.3. Enzymes and substrates are often added together.4. Reagents are not pure.5. Clotting-time is our only measure for clotting-velocity.Formulas are deduced, which makes it possible to recognize the effect of these complications.

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