triethylsilane; scandium tris(trifluoromethanesulfonate) in toluene T=180°C; 24 h; Inert atmosphere;

acetic acid 2 h; Heating;

1: 90 percent / N-bromosuccinimide (NBS), benzoyl peroxide / CCl4 / 3 h / Heating 2: 83 percent / aq. CaCO3 / dioxane / 10 h / Heating 3: 1.) n-BuLi / 1.) diethyl ether, hexane, 0 deg C, 30 min, 2.) diethyl ether, hexane, 10 h 4: 50 percent / glacial acetic acid / 2 h / Heating View Scheme

1: 1.) n-BuLi / 1.) diethyl ether, hexane, 0 deg C, 30 min, 2.) diethyl ether, hexane, 10 h 2: 50 percent / glacial acetic acid / 2 h / Heating View Scheme

1: d'iodure de sodium 2: 48 h View Scheme

pyridine Heating;