Facile Phenylphosphinidene Transfer Reactions from Carbene–Phosphinidene Zinc Complexes

Phosphinidenes [R‐P] are convenient P1 building blocks for the synthesis of a plethora of organophosphorus compounds. Thus far, transition‐metal‐complexed phosphinidenes have been used for their singlet ground‐state reactivity to promote selective addition and insertion reactions. One disadvantage of this approach is that after transfer of the P1 moiety to the substrate, a challenging demetallation step is required to provide the free phosphine. We report a simple method that enables the Lewis acid promoted transfer of phenylphosphinidene, [PhP], from NHC=PPh adducts (NHC=N‐heterocyclic carbene) to various substrates to produce directly uncoordinated phosphorus heterocycles that are difficult to obtain otherwise. PPh‐Quelle: Die ZnCl2‐vermittelte Phosphiniden‐Übertragung von dem sterisch kaum befrachteten Carben‐Phosphiniden‐Addukt MeNHC=PPh auf verschiedene Substrate S bietet Zugang zu nichtkomplexierten Phosphorheterocyclen, die auf anderem Wege schwer erhältlich sind.