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

pyridine; dihydrogen peroxide T=20°C; 2 h;

1: 1-ethylphosphonic acid diethyl ester With n-butyllithium in tetrahydrofuran; hexane T=-78°C; 0.166667 h; 2: With selenium in tetrahydrofuran; hexane T=-78 - -30°C; 3: methyl iodide in tetrahydrofuran; hexane T=-78°C;

dihydrogen peroxide in pyridine Ambient temperature;

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