Palladium-catalyzed polycyclizations of substituted dienynes: Stereoselective routes to highly complex polycycles

Article abstract of DOI:10.1016/S0040-4039(00)74711-3

12-Substituted 2-bromo-1,11-dien-6-ynes were found to undergo a palladium-catalyzed biscyclization followed by a diastereospecific 6π-electrocyclic rearrangement or a Diels-Alder reaction to give substituted angularly bisanellated cyclohexadienes or polyc