in dichloromethane T=20°C; 1.5 h;

1.1: ammonium acetate / 0.75 h / Reflux 2.1: lithium aluminium tetrahydride / tetrahydrofuran / 4 h / 0 °C / Inert atmosphere; Reflux 3.1: water / 0.5 h / 20 °C 4.1: hydrogenchloride / N,N-dimethyl-formamide / Saturated solution 4.2: pH 11 5.1: dichloromethane / 1.5 h / 20 °C View Scheme

1.1: lithium aluminium tetrahydride / tetrahydrofuran / 4 h / 0 °C / Inert atmosphere; Reflux 2.1: water / 0.5 h / 20 °C 3.1: hydrogenchloride / N,N-dimethyl-formamide / Saturated solution 3.2: pH 11 4.1: dichloromethane / 1.5 h / 20 °C View Scheme

1.1: water / 0.5 h / 20 °C 2.1: hydrogenchloride / N,N-dimethyl-formamide / Saturated solution 2.2: pH 11 3.1: dichloromethane / 1.5 h / 20 °C View Scheme