benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine in dichloromethane; water T=20°C;

1,4-diaza-bicyclo[2.2.2]octane; tert.-butylhydroperoxide; copper dichloride in water; 1,2-dichloro-ethane T=80°C; Schlenk techniqueInert atmosphere;

palladium 10 on activated carbon; oxygen; tetra-(n-butyl)ammonium iodide in 1,4-dioxane T=80°C; 14 h; Autoclave;