sodium; NH4Br in ammonia byproducts: NaBr, benzene, EtPHPh;

2,2'-azo-bisisobutyronitrile in neat (no solvent) under protective gas addn. of AIBN to the mixt. of (C6H5)3SnH and P(C6H5)2CHCH2 without solvent, slowly heating to 60-70°C, then 6-7 h at 70-90°C meanwhile addn. of the rest of AIBN; recrystn. from hexane, elem. anal.;

2,2'-azo-bisisobutyronitrile in neat (no solvent) byproducts: ethylenebis(diphenylphosphine); under protective gas mixt. of (C6H5)3SnCHCH2 and (C6H5)2PH in presence of AIBN without solvent, heated at 80-90°C during 10 h, then addn. of hot hexane, crystn.; filtration of pptn., cooling of soln., crystn., then recrystn. from hexane;