Thermal [1,5] Hydrogen Sigmatropic Shifts in <i>cis,cis</i>-1,3-Cyclononadienes Probed by Gas-Phase Kinetic Studies and Density Functional Theory Calculations
作者:John E. Baldwin、Anuradha S. Raghavan、B. Andes Hess,、Lidia Smentek
DOI:10.1021/ja065656s
日期:2006.11.1
transition states for [1,5] hydrogen shifts responsible for isomerizations among the five labeled dienes. A generalized formulation of the Winstein-Holness equation is presented and applied to the complex system, one that involves 11 ground-state conformers, 10 transition states separating them, and five transition states for [1,5] hydrogen shifts. The value for the empirical Ea derivedfrom calculated mole