Eliminative cleavage of cyclopropanes: leaving group stabilising and transition-state structure

1982 ◽  
pp. 237 ◽  
Author(s):  
Simon Hughes ◽  
Charles J. M. Stirling
Keyword(s):  
Transition State ◽  
State Structure ◽  
Transition State Structure ◽  
Leaving Group

Solvent effects on the structure of SN2 transition states

1978 ◽  
Vol 56 (20) ◽  
pp. 2691-2699 ◽  
Author(s):  
Kenneth Charles Westaway
Keyword(s):  
Transition State ◽  
Isotope Effect ◽  
Solvent Effects ◽  
Kinetic Isotope Effect ◽  
Transition States ◽  
State Structure ◽  
Transition State Structure ◽  
Kinetic Isotope ◽  
Wide Range ◽  
Leaving Group

Two research groups have used heavy atom leaving group kinetic isotope effects to determine how the structure of an SN2 transition state is affected by a change in solvent. Two completely different types of behaviour were observed in these studies. In one case, the leaving group kinetic isotope effect, and thus the transition state structure, changed markedly when the solvent was varied over a reasonably narrow range. In the other study, the leaving group kinetic isotope effect (transition state structure) remained constant over a wide range of solvents. A model describing the interaction between solvent molecules and SN2 transition states is developed and a SolvationruleforSN2reactions which rationalizes the different experimental results is explained and justified. Finally, predictions based on the solvation rule are shown to be in agreement with the results of theoretical calculations of solvent effects on SN2 transition states and secondary α deuterium kinetic isotope effect measurements.

Rearrangement of chorismate to prephenate. Use of chorismate mutase inhibitors to define the transition state structure

Biochemistry ◽  
1977 ◽  
Vol 16 (22) ◽  
pp. 4848-4852 ◽  
Author(s):  
P. R. Andrews ◽  
E. N. Cain ◽  
E. Rizzardo ◽  
G. D. Smith
Keyword(s):  
Transition State ◽  
Chorismate Mutase ◽  
State Structure ◽  
Transition State Structure

Conservation of Transition State Structure in Fast Folding Peripheral Subunit-Binding Domains

2008 ◽  
Vol 383 (1) ◽  
pp. 224-237 ◽  
Author(s):  
Timothy D. Sharpe ◽  
Neil Ferguson ◽  
Christopher M. Johnson ◽  
Alan R. Fersht
Keyword(s):  
Transition State ◽  
State Structure ◽  
Transition State Structure ◽  
Binding Domains
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