Cyclisation of ω-unsaturated β-dicarbonylcompounds catalyzed by a palladium hydride species

Article abstract of DOI:10.1016/S0040-4039(00)74294-8

When treated with potassium t-butoxide and then with a palladium(0) complex, the title compounds 1, 2, or 9 are smoothly cyclized by an attack of the enolates onto the unsaturation assisted by a palladium(II) species of tBuO-Pd-H type. The formation of a