aluminum tri-bromide in acetonitrile T=70°C; 48 h; Inert atmosphere;

1: (PhCH2Se)2; sodium tetrahydroborate / N,N-dimethyl-formamide / |Inert atmosphere; |Reflux 2: aluminum tri-bromide / acetonitrile / 48 h / 70 °C / |Inert atmosphere View Scheme

hydrogenchloride; water T=150°C;