A new synthesis of pentalenene using a novel tandem cyclisation involving ketene radical intermediates

Article abstract of DOI:10.1016/S0040-4039(99)02070-5

A new approach to the synthesis of the angular triquinane (±)- pentalenene, based on sequential 5-exo-trig and 5-exo-dig radical cyclisations involving ketene intermediates produced from an α,β- unsaturated acyl radical precursor, is described.