Abstract
For the first time, a kinetic investigation of the interchange process in the equilibrium between the Z- and E-isomers of a stable phosphorus ylide involving a 2-indolinone has been undertaken by the 1H NMR technique. Activation parameters such as k-1, k1, ktotal, Ea1, Ea-1, Eatotal, ΔS≠, ΔH≠ and ΔG≠ along with thermodynamic parameters such as Ke, ΔH°, ΔG° and ΔS° were obtained from experimental data for the forward and reverse reactions.
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