hydrogen; Ru2Cl4-(S)-(2,2'-bis(diphenylphosphino)-1,1'-binaphthyl)2*NEt3 in dichloromethane T=50°C; P=76000 Torr; Title compound not separated from byproducts;

Au(Ph3P)+NTf2-; toluene-4-sulfonic acid in toluene T=100°C; Hydrohydrazination / Fisher indolization; 2 h; Inert atmosphere; regioselective reaction;

hydrogen; Ru2Cl4-(S)-(2,2'-bis(diphenylphosphino)-1,1'-binaphthyl)2*NEt3 in dichloromethane T=50°C; P=76000 Torr; Title compound not separated from byproducts;