aluminum tri-bromide; ethanethiol T=20°C; 24 h;

1: 71 percent / HBr/AcOH / 0 - 20 °C 2: 98 percent / dimethylformamide / 3 h / Heating 3: 70 percent / EtOLi / ethanol / 8 h / Heating 4: 78 percent / H2 / Pd/C / CHCl3; methanol / 48 h / 20 °C 5: 75 percent / AlBr3; EtSH / 24 h / 20 °C View Scheme

1: 98 percent / dimethylformamide / 3 h / Heating 2: 70 percent / EtOLi / ethanol / 8 h / Heating 3: 78 percent / H2 / Pd/C / CHCl3; methanol / 48 h / 20 °C 4: 75 percent / AlBr3; EtSH / 24 h / 20 °C View Scheme

1: 78 percent / H2 / Pd/C / CHCl3; methanol / 48 h / 20 °C 2: 75 percent / AlBr3; EtSH / 24 h / 20 °C View Scheme

1: (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride / diethyl ether / 0.5 h / 20 °C / |Inert atmosphere 2: acetic acid; hydrogen bromide / 18 h / |Reflux View Scheme

1: (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride / diethyl ether / 0.5 h / 20 °C / |Inert atmosphere 2: acetic acid; hydrogen bromide / 18 h / |Reflux View Scheme