hydrogenchloride; water in methanol T=60°C; 6 h;

1: triethylamine / dichloromethane / 3 h / 0 - 20 °C 2: potassium carbonate / acetonitrile / 6 h / |Reflux 3: hydrogenchloride; water / methanol / 6 h / 60 °C View Scheme

1: potassium carbonate / acetonitrile / 6 h / |Reflux 2: hydrogenchloride; water / methanol / 6 h / 60 °C View Scheme