Abstract: Allyl and benzyl groups migrate rapidly from C-4 to the exocyclic methylene group of cross-conjugated methylenecyclohexadienes. Rearrangement occurs rapidly at room temperature and below, except when the exocyclic methylene group is flanked by tert-butyl groups. Deuterium labeling studies show that the two ends of the allyl group become equivalent during the reaction. The rearrangement rates are variable, show significant ...
