1: With sodium hydride in N,N-dimethyl-formamide 0.25 h; 2: With hydrogenchloride in water; N,N-dimethyl-formamide T=0°C; pH=4;

1: [{(η5-C5Me5)RhCl}2(μ-Cl)2]; copper diacetate / acetonitrile / 20 h / 100 °C / |Sealed tube 2: hydrogenchloride / ethanol / 1 h / 80 °C View Scheme

1: triethylamine / dichloromethane / 0 - 20 °C / |Inert atmosphere 2: [{(η5-C5Me5)RhCl}2(μ-Cl)2]; copper diacetate / acetonitrile / 20 h / 100 °C / |Sealed tube 3: hydrogenchloride / ethanol / 1 h / 80 °C View Scheme