sulfur; [Rh(H)(PEt3)3] in acetone 2 h; Heating;

1: With potassium carbonate in water T=20°C; 1 h; Inert atmosphere; 2: With 2,4,6-trichloro-1,3,5-triazine in dichloromethane; water T=0°C; 0.5 h; Inert atmosphere; 3: With sodium hydroxide in dichloromethane; water pH=11; Inert atmosphere;

sodium hydroxide; potassium carbonate in acetonitrile T=25°C; 1 h;

T=250 - 260°C;

1: ammonium thiocyanate With PPh3.Br2 in acetonitrile T=20°C; 2: n-CH3(CH2)6CH2OTHP in acetonitrile T=20°C; Title compound not separated from byproducts;

1: triethylamine / 1) chloroform, 3 h, room temp.; 2) room temp., 3 h 2: 91 percent / 250 - 260 °C View Scheme