1: ethanethiol With formaldehyd; sodium methylate in methanol T=40°C; 1 h; 2: (1,1,2,2-tetramethyl-ethyl)-dimethylchlorosilane With 1H-imidazole in methanol; dichloromethane T=0 - 20°C; 24.1667 h;

sulfuryl dichloride in dichloromethane 1.) 0 deg C, 30 min, 2.) room temperature, 10 min;

1: 78 percent / 4-(dimethylamino)pyridine, Et3N / CH2Cl2 / 6.5 h / Ambient temperature 2: 98 percent / SO2Cl2 / CH2Cl2 / 1.) 0 deg C, 30 min, 2.) room temperature, 10 min View Scheme

samarium diiodide in tetrahydrofuran 10 h; Ambient temperature;