Kinetic .alpha.-deuterium isotope effects in the reactions of benzyl chlorides with cyanide ion and in the solvolyses of benzyl chlorides

1972 ◽  
Vol 37 (8) ◽  
pp. 1185-1189 ◽  
Author(s):  
Alfred V. Willi ◽  
Chih-Kuo. Ho ◽  
Alireza. Ghanbarpour
Keyword(s):  
Isotope Effects ◽  
Cyanide Ion ◽  
Benzyl Chlorides ◽  
Deuterium Isotope Effects

Pseudo-thermodynamic Parameters and Isotope Effects for Hydrolysis of a Series of Benzyl Chlorides in Water

1973 ◽  
Vol 51 (17) ◽  
pp. 2958-2962 ◽  
Author(s):  
K. M. Koshy ◽  
R. E. Robertson ◽  
W. M. J. Strachan
Keyword(s):  
Temperature Coefficient ◽  
Isotope Effects ◽  
Probable Mechanism ◽  
Benzyl Chlorides ◽  
Enthalpy Of Activation ◽  
Mechanism Of Hydrolysis ◽  
Deuterium Isotope Effects ◽  
Solvent Isotope ◽  
Hydrolysis Of ◽  
Solvent Isotope Effects

The temperature coefficient of the enthalpy of activation (ΔCp≠) for the hydrolysis of p-methyl, p-chloro and p-nitro benzyl chlorides have been determined, as well as α-deuterium isotope effects and kinetic solvent isotope effects. These results are discussed in terms of probable mechanism of hydrolysis in water.

Mechanism of hydration and isomerisation of 4-ethylidene-2,6-di-tert-butyl-2,5-cyclohexadien-1-one. Kinetics, acid-base catalysis and solvent deuterium isotope effects

1979 ◽  
Vol 44 (1) ◽  
pp. 110-122 ◽  
Author(s):  
Jiří Velek ◽  
Bohumír Koutek ◽  
Milan Souček
Keyword(s):  
Aqueous Medium ◽  
Rate Equation ◽  
Kinetic Data ◽  
Isotope Effects ◽  
Base Catalysis ◽  
Quinone Methide ◽  
Reaction Products ◽  
Acid Base ◽  
Deuterium Isotope Effects ◽  
Hydroxybenzyl Alcohol

Competitive hydration and isomerisation of the quinone methide I at 25 °C in an aqueous medium in the region of pH 2.4-13.0 was studied spectrophotometrically. The only reaction products in the studied range of pH are 4-hydroxybenzyl alcohol (II) and 4-hydroxystyrene (III). The form of the overall rate equation corresponds to a general acid-base catalysis. The mechanism of both reactions for three markedly separated pH regions is discussed on the basis of kinetic data and solvent deuterium effect.

Hydrogen/Deuterium-Isotope Effects on NMR Chemical Shifts and Symmetry of Homoconjugated Hydrogen-Bonded Ions in Polar Solution

2000 ◽  
Vol 122 (51) ◽  
pp. 12878-12879 ◽  
Author(s):  
Parwin Schah-Mohammedi ◽  
Ilja G. Shenderovich ◽  
Carsten Detering ◽  
Hans-Heinrich Limbach ◽  
Peter M. Tolstoy ◽  
...  
Keyword(s):  
Chemical Shifts ◽  
Isotope Effects ◽  
Polar Solution ◽  
Nmr Chemical Shifts ◽  
Hydrogen Deuterium ◽  
Deuterium Isotope Effects ◽  
Hydrogen Bonded
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