methanol in diethyl ether byproducts: MeOSiMe3; dropwise addn. of methanol in ether to soln. of tBu3SnPR2 in ether (under Ar, -40°C), stirred (room temp., 4 h); evapn. of solvent, fractional distn. in vac.;

in diethyl ether; ammonia byproducts: NaCl; NH3 (liquid); dropwise addn. of t-Bu3SnCl in ether to NaPH2 in NH3 at -78°C, stirring for 0.5 h; filtn. to remove NaCl, evapn., vac. distn., elem. anal.;