Laboratory Experimentation

202.4 MHz) were carried out on a Bruker AC-300 or a Varian 500. 1H NMR data are reported as follows: chemical shift (multiplicity (b = broad, s = singlet, d = doublet, t = triplet, q = quartet, and m = multiplet), and integration). Chemical shifts for 1H NMR spectra are reported in ppm downfield from internal tetramethylsilane (TMS, d scale) using residual protons in the deuterated solvents (C6D6, 7.15; CDCl3, 7.25; CD2Cl2, 5.31ppm) as references. 13C and 31P NMR spectra were determined with 1H decoupling and the chemical shifts are reported in ppm vs. Me4Si (CDCl3 at 77 ppm and C6D6 at 128 ppm) and 85 % H3PO4 standard (external), respectively. Elemental analyses were provided by Desert Analysis (Phoenix, AZ). CDCl3 solvents were purchased from Aldrich distilled over calcium hydride, and vacuum transferred into an air-tight solvent bulb prior to transfer into the inert-atmosphere glovebag. All reactions were carried out either under a dry nitrogen atmosphere using standard Schlenk techniques unless otherwise noted. 22 Cyclohexyl phosphine and 1,2-bis(phosphino)ethane were purchased from Strem. HCl (1.0 M i