(1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; palladium 10 on activated carbon; sodium t-butanolate in 1,3,5-trimethyl-benzene 24 h; Inert atmosphereReflux;

[NiCl(1-naph)(PPh3)2]; sodium hydride; triphenylphosphine in toluene; white oil T=120°C; 12 h; Inert atmosphere;

[NiCl(1-naph)(PPh3)2]; sodium hydride; triphenylphosphine in toluene; white oil T=120°C; 12 h; Inert atmosphere;

trichlorophosphate T=100°C; Vilsmeier formylation; 3 h;