Phosphoric Acid → Diphenylphosphine

Participants

Reaction Conditions

Reaction Steps

1.04 g (4.71 mmol) of chlorodiphenylphosphine was added dropwise under a nitrogen gas atmosphere to a suspension of 229 mg (9.42 mmol) of magnesium (turning) in 10 cm3 of N,N-dimethylformamide and the mixture was stirred at 100° C. for one hour. To the reaction mixture was added dropwise 10 cm3 (10 mmol) of 1 mol·dm-3 phosphoric acid and then 10 cm3 of toluene. The mixture was stirred, the aqueous layer and the toluene layer were separated off, the toluene layer was dried over anhydrous sodium sulfate and concentrated under reduced pressure, giving 710 mg (3.81 mmol) of diphenylphosphine in 81% yield.

Provenance & Evidence