1: hydrogenchloride / methanol; water / 6 h / Reflux 2: acetic acid / dichloromethane; 2,2,2-trifluoroethanol / 9 h / -10 °C / Molecular sieve 3: hydrogen; palladium(II) oxide hydrate / methanol / 12 h / 2585.81 Torr View Scheme

Multi-step reaction with 2 steps 1: hydrogenchloride / methanol; water / 6 h / Reflux2: acetic acid / dichloromethane; 2,2,2-trifluoroethanol / 9 h / -10 °C / Molecular sieve