1: N-methyl-2-(2'-bromophenyl)-1H-indole With n-butyllithium in tetrahydrofuran T=-78°C; 0.5 h; 2: chloro-dicyclohexylphosphine in tetrahydrofuran T=-78 - 20°C; Further stages.;

1: palladium diacetate; caesium carbonate; bis[2-(diphenylphosphino)phenyl] ether / dimethyl sulfoxide / 5 h / 100 °C / |Inert atmosphere; |Sealed tube 2: hydrogenchloride / tetrahydrofuran; water / 4 h / |Reflux View Scheme