Phosphine sulfide, triphenyl- → Triphenylphosphine Oxide

Participants

Reaction Steps

To a mixture of triphenylphosphine sulfide (0.3 g) and ethyl acetate (10 ml) is added thionyl chloride (0.16 ml) at room temperature, and the mixture is stirred for 2 hours at the same temperature. The reaction mixture is shaken with aqueous 6% sodium hydrogen carbonate (20 ml) and the resulting mass is stirred for another 2 hours. The organic layer which forms on standing for a while is taken, washed with water, filtered to remove a solid mass and concentrated to dryness. The residue is crystallized from ether to give triphenylphosphine oxide (0.26 g). m.p. 155°-156° C.

Provenance & Evidence