Lewis acid mediated P-P bond hydrogenation and hydrosilylation

The reaction of H-2, R3SiH or R2SiH2 with P5Ph5 in the presence of stoichiometric B(C6F5)(3) results in excellent yields of the phosphine-borane adducts (PhPH2)B(C6F5)(3), ((R3Si)PhPH)B(C6F5)(3) and ((R2SiH)PhPH)B(C6F5)(3), respectively.