Abstract
The reactions of either PhPCl2 or PCl3 with (Me3Si)2NLi followed by H2C[dbnd]CHMgBr were used to prepare the new P-vinyl substituted [bis(trimethylsilyl)amino]phosphines, (Me3Si)2NP(R)CH[dbnd]CH2 [1: R=Ph, 2: CH[dbnd]CH2, 3: R=Me, and 4: R=N(SiMe3)2]. Oxidative bromination of phosphines 3–1 afforded the P-bromo-P-vinyl-N-(trimethylsilyl)phosphoranimines, Me3SiN[dbnd]P(CH[dbnd]CH2)(R)Br [5: R=Ph, 6: R=CH[dbnd]CH2, 7: R=Me], which, upon treatment with CF3CH2OH/Et3N, were subsequently converted to the P-trifluoroethoxy derivatives, Me3SiN[dbnd]P(CH[dbnd]CH2)(R)OCH2CF3 [8: R=Ph, 9: R=CH[dbnd]CH2, 10: R=Me]. Compounds 1–10, which are of interest as potential precursors to P-vinyl substituted poly(phosphazenes), were fully characterized by elemental analyses (except for the thermally unstable P-Br derivatives 5–7) and NMR spectroscopy (1H, 13C, and 31P) including complete analysis of the vinylic proton splitting patterns via HOM2DJ experiments.