Catalytic platinum-initiated cation-olefin reactions with alkene terminating groupsElectronic supplementary information (ESI) available: Synthesis and characterization of all compounds. See DOI: 10.1039/c3cc41699b

A series of phosphinePt 2+ -catalysts is reported, which enable the oxidative cascade cyclization of poly-alkene substrates. When the terminus is appropriately arranged and a catalyst reoxidation mediator is included, several polycyclic all carbon skeletons can be obtained. In one example, a chiral P 2 Pt +2 catalyst provides up to 79% ee. A series of phosphinePt 2+ -catalysts is reported, which enable the oxidative cascade cyclization of poly-alkene substrates.