Abstract: Reaction of 1, 2-dibromo-3, 3, 6, 6-tetramethylcyclohexene with sodium or oxidation of the bishydrazone of 3, 3, 6, 6-tetramethylcyclohexanedione-l, 2 with silver oxide gave a dimeric, rearranged, bicyclic triene (17), believed to form from the hindered cyclobutadiene (2) resulting from dimerization of 3, 3, 6, 6-tetramethylcyclo-hexyne. Other products from the two reactions have also been identified. imple cyclobutadienes, not ...
