General. Reactions of phosphines were conducted under nitrogen. Mp values are corrected. Proton nmr spectra were taken with JEOL MH-100 or Varian T-60 spectrometers. Proton- decoupled 31P nmr spectra were taken on a Bruker HFX-10 system at 36.43 MHz; shifts are relative to external 85% H3P04. The proton-decoupled 13C nmr spectrum was obtained by the Fourier transform technique on the Bruker spectrometer at 22.62 MHz utilizing C6F6 ...
