1: With trifluoroacetic acid in dichloromethane T=20°C; 24 h; 2: With sodium carbonate in dichloromethane; water Product distribution / selectivity;

1: (3-bromo-phenyl)-carbamic acid t-butyl ester With sodium hydride in DMF (N,N-dimethyl-formamide) 2: methyl iodide in DMF (N,N-dimethyl-formamide) T=20°C; 5 h;

potassium acetate; (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride in N,N-dimethyl-formamide T=80°C; 6.25 h;