Tributylstannane → Phosphine, bis(1,1,2,2,2-pentafluoroethyl)-

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Reaction Steps

0.3 g (1.0 mmol) of bis(pentafluoroethyl)phosphinous acid chloride, (C2F5)2PCl, obtainable in accordance with Example 2, is condensed into a degassed solution of 0.61 g (2.0 mmol) of tributyltin hydride, (n-C4H9)3SnH, in 1,6-dibromohexane. The mixture is stirred at room temperature for one hour, and the volatile compounds are subsequently removed under dynamic vacuum conditions. Three cold traps are used: −30° C., −78° C. and −196° C. The cold trap at −196° C. contains a colourless liquid, bis(pentafluoroethyl)phosphine, (C2F5)2PH. The compound is stable at room temperature under inert-gas conditions.

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