NUCLEAR MAGNETIC RESONANCE STUDY OF EXCHANGING SYSTEMS. VII. 13C NMR SPECTRA OF BARBARALONE AND ITS DEGENERATE COPE REARRANGEMENT

13C NMR spectra of barbaralone were measured at several temperatures. Spin-lattice relaxation times and nuclear Overhauser enhancement factors were also determined. Complete line shape analyses of 13C spectra were made by the simulation method to obtain the accurate activation parameters of the Cope rearrangement of barbaralone.