T=0 - 20°C; 1 h;

N-bromosuccinmide; silver hexafluoroantimonate; [{(η5-C5Me5)RhCl}2(μ-Cl)2]; 2,2,2-trimethylacetic acid in 1,2-dichloro-ethane T=60°C; 16 h; Inert atmosphere; regioselective reaction;

1: oxalyl dichloride; N,N-dimethyl-formamide / benzene / 0.5 h / Inert atmosphere 2: triethylamine / dichloromethane / 1 h / Inert atmosphere View Scheme

1: sodium hydroxide / water / 20 °C / Inert atmosphere 2: N-bromosuccinmide; silver hexafluoroantimonate; [{(η5-C5Me5)RhCl}2(μ-Cl)2]; 2,2,2-trimethylacetic acid / 1,2-dichloro-ethane / 16 h / 60 °C / Inert atmosphere View Scheme

1: With sulfur; [2,2']bipyridinyl; copper(l) iodide; potassium carbonate in 1-methyl-pyrrolidin-2-one T=110°C; 24 h; Inert atmosphere; 2: With pyridine; N-methoxyamine hydrochloride in 1-methyl-pyrrolidin-2-one T=110°C; 3 h; Inert atmosphere;

1,4-diaza-bicyclo[2.2.2]octane; copper(l) iodide; 1,10-phenanthroline; tetra-(n-butyl)ammonium iodide in water T=20 - 160°C; 48.5 h; Inert atmosphere;

1: bis-triphenylphosphine-palladium(II) chloride; copper(l) iodide; triethylamine / N,N-dimethyl-formamide / 3 h / 120 °C / |Microwave irradiation; |Inert atmosphere 2: ammonium acetate; NaAuCl4*2H2O; silver hexafluoroantimonate / acetonitrile / 20 h / 85 °C View Scheme

potassium phosphate; copper(l) iodide in N,N-dimethyl-formamide T=120°C; 24 h; Inert atmosphere;