Triphenylphosphine → Phenyl phosphorus dichloride

Participants

Reaction Steps

A mixture of 120 g (=0.873 mole) of freshly distilled phosphorus trichloride and 80 g (0.3053 mole) of triphenylphosphane (→molar ratio 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 56 g (=0.313 mole) of dichlorophenylphosphane and 33 g (=0.15 mole) of chlorodiphenylphosphane (→molar ratio 2.08 to 1), unconverted phosphorus trichloride and unconverted triphenylphosphane. The yield relative to the starting amount of triphenylphosphane is 48% of theory in dichlorophenylphosphane and 46.5% of theory in chlorodiphenylphosphane, with a 71% conversion.

Provenance & Evidence