chloro-trimethyl-silane; triethylamine in N,N-dimethyl-formamide T=100°C;

triethylamine in acetonitrile T=0 - 20°C; 16 h; Inert atmosphere;

1: hydrogenchloride; water / 19 h / Reflux 2: triethylamine; diphenyl phosphoryl azide / N,N-dimethyl-formamide / 7 h / 100 °C 3: trifluoroacetic acid / dichloromethane / 5 h / 20 °C View Scheme

hydrogenchloride; water 19 h; Reflux;