1.1: palladium 10 on activated carbon; palladium(II) oxide hydrate; acetic acid; hydrogen / methanol / 48 h / 20 °C 2.1: triethylamine / methanol / 0.5 h / 0 °C 2.2: 24 h / 0 - 20 °C 3.1: sodium hydroxide / methanol; water / 3 h / 20 °C 4.1: 1,2-dichloro-ethane / 18 h 4.2: 18 h View Scheme

1: hydrogen / palladium(II) oxide hydrate; palladium 10 on activated carbon / acetic acid; methanol / 48 h / 20 °C 2: triethylamine / methanol / 24 h / 0 - 20 °C 3: sodium hydroxide; water / methanol / 3 h / 20 °C View Scheme

in dichloromethane T=0 - 20°C; 12 h;