The synthesis of a triphosphenium bromide salt is described and its use as a P+ transfer agent is outlined by reactions with an N-heterocyclic carbene and an anionic bisphosphine, yielding an NHC-stabilized P(I) cation and a P(I) containing zwitterion, respectively.
Kosnik, S. C., Binder, J. F., Nascimento, M. C., Macdonald, C. L. B. Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I). J. Vis. Exp. (117), e55021, doi:10.3791/55021 (2016).