Access to frame-work of linear triquinanes by intermediate of bicyclo [2.1.0] pentane derivatives. Total synthesis of a triquinane, (±) hirsutene

Article abstract of DOI:10.1016/S0040-4020(01)88514-8

The cycloaddition of enamines with electrophilic gem-dimethylcyclopropenes followed by solvolytic ring cleavage of the 2-amino bicyclo [2.1.0] pentane adducts, leads to gem-dimethylcyclopentene derivatives. These reactions are used as key-sequence for the