Proton-catalyzed oxo-alkene coupling: 2-platinaoxetane formation.

@article{Weliange2009ProtoncatalyzedOC,
  title={Proton-catalyzed oxo-alkene coupling: 2-platinaoxetane formation.},
  author={Nandita M Weliange and Endre Szuromi and Paul R. Sharp},
  journal={Journal of the American Chemical Society},
  year={2009},
  volume={131 25},
  pages={8736-7}
}
Formation of 2-platinaoxetane 2 from oxo complex 1 and norbornene (NB) is mediated by hydroxo complex 5. The facile reaction of 5 with NB to give protonated 2-platinaoxetane 7 supports the involvement of such reactions in Wacker alkene oxidation.