Triphenylphosphine → Phenyl phosphorus dichloride

Participants

Reaction Steps

A mixture of 60 g (=0.4364 mole) of freshly distilled phosphorus trichloride and 40 g (=0.1527 mole) of triphenylphosphane (→molar ratio of 2.86 to 1) is added dropwise in the course of 30 minutes to the apparatus which has been described in Example 6 and which is at 620° C. The subsequent distillation gives 38 g (=0.1212 mole) of dichlorophenylphosphane and 16.5 g (0.075 mole) of chlorodiphenylphosphane (→molar ratio of 2.83 to 1), unconverted phosphorus trichloride and unconverted triphenylphosphane. The yield relative to the starting amount of triphenylphosphane is 52% of theory in dichlorophenylphosphane and 38% of theory in chlorodiphenylphosphane, with an 87% conversion.

Provenance & Evidence