1,1,1-Trifluoro-2-iodoethane → Diphenyl(2,2,2-trifluoroethyl)phosphine oxide

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Reaction Steps

Ethyl diphenylphosphinite (b1; 20.0 g) and 1,1,1-trifluoro-2-iodoethane (b2; 36.5 g) were put into a reaction vessel under an argon atmosphere, and stirred at room temperature for 4 days. The resulting mixture was purified by means of fraction-collecting column chromatography using ethyl acetate as the eluent and silica gel as the stationary phase powder, and further purified by recrystallization from a mixed solvent of toluene and heptane (volume ratio of toluene:heptane=1:1), and then dried, whereby 12.6 g of 2,2,2-trifluoroethyl diphenylphosphine oxide (b3) was obtained. The yield based on the compound (b1) was 51.2%.

Provenance & Evidence