Condensation, of phosphorus trichloride

Condensation, of phosphorus trichloride with dimethylamine, 46, 42 of salicylaldehyde with chloroacetic add, 46, 28... 

Triphenylphosphine, the indispensable auxiliary for Wittig olefmations, is mass-produced by direct condensation of phosphorus trichloride with phenylsodium. The latter is generated in situ from chlorobenzene and sodium in a kind of Wurtz-Fittig reaction. Congeners such as the methoxymethoxy-armed phosphine 49 or tri-2-furylphosphine (50) can be conveniently prepared by metalation of the (het)aromatic precursor and its subsequent condensation with phosphorus trichloride or a trialkyl phosphite (Scheme 1 0). " ... 

---