Aliphatic Claisen rearrangement transition state structure from secondary .alpha.-deuterium isotope effects

1979 ◽  
Vol 101 (10) ◽  
pp. 2747-2748 ◽  
Author(s):  
J. J. Gajewski ◽  
N. D. Conrad
Keyword(s):  
Transition State ◽  
Claisen Rearrangement ◽  
Isotope Effects ◽  
State Structure ◽  
Transition State Structure ◽  
Deuterium Isotope Effects

Secondary Kinetic Isotope Effects in Bimolecular Nucleophilic Substitutions. V. The Role of the Solvent in the Reaction Between Methyl Iodide and Pyridine

1972 ◽  
Vol 50 (7) ◽  
pp. 982-985 ◽  
Author(s):  
K. T. Leffek ◽  
A. F. Matheson
Keyword(s):  
Transition State ◽  
Isotope Effects ◽  
Kinetic Isotope Effects ◽  
State Structure ◽  
Transition State Structure ◽  
Initial State ◽  
Nucleophilic Substitutions ◽  
Kinetic Isotope ◽  
Deuterium Isotope Effects

Secondary kinetic deuterium isotope effects are presented for the reaction of methyl-d3 iodide and pyridine in four different solvents. Calculations on mass and moment of inertia change with deuteration in the initial state and an assumed tetrahedral transition state, together with internal rotational effects, are used to rationalize the inverse isotope effects. It is concluded from the variation of the isotopic rate ratio, that the transition state structure varies with solvent.

Transition state structure for peracid epoxidation. Secondary deuterium isotope effects

1975 ◽  
Vol 97 (18) ◽  
pp. 5231-5233 ◽  
Author(s):  
Robert P. Hanzlik ◽  
Greg O. Shearer
Keyword(s):  
Transition State ◽  
Isotope Effects ◽  
State Structure ◽  
Transition State Structure ◽  
Deuterium Isotope Effects

.alpha.-Deuterium isotope effects and transition-state structure in an intramolecular model system for methyl-transfer enzymes

1979 ◽  
Vol 101 (15) ◽  
pp. 4349-4351 ◽  
Author(s):  
Ivan Mihel ◽  
Jay O. Knipe ◽  
James K. Coward ◽  
Richard L. Schowen
Keyword(s):  
Transition State ◽  
Isotope Effects ◽  
Model System ◽  
State Structure ◽  
Transition State Structure ◽  
Methyl Transfer ◽  
Deuterium Isotope Effects
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