Abstract:
Phosphine, generated from red phosphorus in the system KOH–H2O–toluene, reacts with vinyl ethers under radical initiation (AIBN, dioxane, 78–80°C, atmospheric pressure) to give tris(2-organyloxyethyl)phosphines, which are transformed to the corresponding phosphine chalcogenides (in up to 73% isolated yield) via the reactions with air oxygen, elemental sulfur or selenium.