Abstract: Thermal rearrangement of dl-and meso-2, 2'-bismethylenecyclopentane and 2, 2'- bismethylenecyclohexane is re-ported. The rates of rearrangement permit independent measurement of the high-and low-energy conformations of the Cope rearrangement. The transition-state geometry for each diastereomer is uniquely defined as Czl,(boat) for the meso isomer and C2h (chair) for the dl diastereomer. Correlation of these findings with ...
