Bis(pentafluoroethyl)phosphinic acid → Bis(pentafluoroethyl)phosphinyl chloride
Reaction equation
[F:1][C:2]([P:8]([C:11]([F:17])([F:16])[C:12]([F:15])([F:14])[F:13])(=O)[OH:9])([F:7])[C:3]([F:6])([F:5])[F:4].C1(P(Cl)(Cl)(Cl)[Cl:25])C=CC=CC=1>>[F:1][C:2]([P:8]([Cl:25])([C:11]([F:17])([F:16])[C:12]([F:15])([F:14])[F:13])=[O:9])([F:7])[C:3]([F:6])([F:5])[F:4]Participants
3
Procedure
21.75 g (72 mmol) of bis(pentafluoroethyl)phosphinic acid are added dropwise at room temperature to 20.0 g (80 mmol) of phenyltetrachlorophosphorane, and the mixture is stirred for four hours. Bis(pentafluoroethyl)phosphinyl chloride is separated off by distillation at atmospheric pressure, giving 18.1 g of bis(pentafluoroethyl)phosphinyl chloride, which corresponds to a yield of 78%, based on the phosphinic acid employed.
Workup
- customBis(pentafluoroethyl)phosphinyl chloride is separated off by distillation at atmospheric pressure