1: lithium methanoate With acetic anhydride; N-ethyl-N,N-diisopropylamine in N,N-dimethyl-formamide
T=20°C; 1 h;
2: 2-bromo-1H-indene With 1,1'-bis-(diphenylphosphino)ferrocene; palladium diacetate in N,N-dimethyl-formamide
T=120°C; 1 h; Further stages.;
