Effect of pressure on sterically hindered reactions with late transition states

2004 ◽  
Vol 17 (3) ◽  
pp. 221-225 ◽  
Author(s):  
Badra Gacem ◽  
Gérard Jenner
Keyword(s):  
Transition States ◽  
Effect Of Pressure ◽  
Sterically Hindered ◽  
Late Transition

scholarly journals Assessing the effective factors affecting the conformational preferences and the early and late transition states of the unimolecular retro-ene decomposition reactions of ethyl cyanate, ethyl thiocyanate and ethyl selenocyanate

RSC Advances ◽  
2017 ◽  
Vol 7 (37) ◽  
pp. 22757-22770 ◽  
Author(s):  
Hooshang Atabaki ◽  
Davood Nori-Shargh ◽  
Mohamad Momen-Heravi
Keyword(s):  
Transition States ◽  
Factors Affecting ◽  
Effective Factors ◽  
Decomposition Reactions ◽  
Barrier Heights ◽  
Conformational Preferences ◽  
Late Transition

The variations of Δ[(HCGAE(X3–C4weakening) – HCGAE(X3–C4strengthening)] parameters correlate well with the variations of the retro-ene decomposition reactions barrier heights going from compound1to compound3.

Distinguishing the Early and Late Transition States and Exploring the Validity of σ → σ*#, σ# → σ*, and σ → π*COConcepts in Diastereoselection from NBO Analysis

2006 ◽  
Vol 71 (11) ◽  
pp. 4178-4182 ◽  
Author(s):  
Veejendra K. Yadav ◽  
Archana Gupta ◽  
Rengarajan Balamurugan ◽  
Vardhineedi Sriramurthy ◽  
Naganabonia Vijaya Kumar
Keyword(s):  
Transition States ◽  
Nbo Analysis ◽  
Late Transition

The effect of pressure on cyclic reactions

1967 ◽  
Vol 20 (7) ◽  
pp. 1335 ◽  
Author(s):  
AH Ewald ◽  
DJ Ottley
Keyword(s):  
Transition States ◽  
Membered Ring ◽  
Aqueous Acetone ◽  
Effect Of Pressure ◽  
Cyclic Reaction

Rates of the cyclization of 4-chlorobutanol and of some analogous non- cyclic solvolysis reactions have been measured in water, methanol, and aqueous acetone at pressures up to 3000 atm. The volume of activation of the cyclic reaction is less negative than those of the linear reactions, in each solvent, but it is suggested that the transition states of both types of reaction may be solvated to about the same extent. The volume of activation for the formation of an eight-membered ring in the cyclization of 4-bromobutylcatechol monoether was also determined.

The effect of pressure on sterically hindered Menshutkin reactions

Tetrahedron ◽  
1970 ◽  
Vol 26 (17) ◽  
pp. 4119-4124 ◽  
Author(s):  
W.J. le Noble ◽  
Y. Ogo
Keyword(s):  
Effect Of Pressure ◽  
Sterically Hindered

New mechanistic criterion for early and late transition states

1976 ◽  
Vol 98 (24) ◽  
pp. 7819-7821 ◽  
Author(s):  
Rolf Huisgen ◽  
Reinhard Schug
Keyword(s):  
Transition States ◽  
Late Transition
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