Pentane → Di-tert-butyl-trimethylsilylmethyl-phosphane

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Reaction Steps

50.00 g (0.277 mol) of Di-t-butylchlorophosphine, 304 ml of 1.0 M pentane solution of (trimethylsilylmethyl)lithium and 150 ml of THF) were refluxed under argon for 3 days. The reaction mixture was allowed to cool off to RT and an aqueous solution of ammonium chloride was added slowly. The organic phase was separated, and dried with magnesium sulfate. After removal of the solvent, the product was purified by distillation in vacuum. The yield of di-tert-butyl-trimethylsilanylmethyl-phosphane was 55.32 g (86%) with b.p. 50-52° C./0.5 mm. 31P NMR (C6D6)+20.05 ppm. 1H NMR (C6D6) 0.01 (s, 9H, SiMe3), 0.23 (d, 2H, 2JPH=5.34 Hz, P—CH2—SiMe3), 0.91 (s, 9H, Me3C), 0.93 (s, 9H, Me3C). Anal. Calcd. for C12H29PSi: C, 62.01; H, 12.58; P, 13.33. Found: C, 61.89; H, 12.53; P, 13.25.

Provenance & Evidence