N,N,N',N',N'',N''-hexamethylphosphoric triamide; samarium diiodide; tert-butyl alcohol in tetrahydrofuran 0.0833333 h; Ambient temperature;

2,2'-azo-bisisobutyronitrile; tri-n-butyl-tin hydride in benzene 1 h; Heating; Yield given;