1: C11H19NO5 With diisobutylaluminium hydride in dichloromethane T=-78°C; 0.5 h; 2: methanol With hydrogenchloride in water T=20°C; 16 h;

1: C11H19NO5 With diisobutylaluminium hydride in dichloromethane T=-78°C; 0.5 h; 2: methanol With hydrogenchloride in water T=20°C; 16 h;

1.1: sulfuric acid / dichloromethane; water / 48 h / 0 - 20 °C 2.1: tetrahydrofuran / 2 h / -78 °C 3.1: tetrafluoroboric acid; 3-chloro-benzenecarboperoxoic acid / dichloromethane; water / 48 h / 20 °C 3.2: 48 h / 20 °C / 3800.26 Torr 4.1: diisobutylaluminium hydride / dichloromethane / 0.5 h / -78 °C 4.2: 16 h / 20 °C View Scheme

1.1: tetrahydrofuran / 2 h / -78 °C 2.1: tetrafluoroboric acid; 3-chloro-benzenecarboperoxoic acid / dichloromethane; water / 48 h / 20 °C 2.2: 48 h / 20 °C / 3800.26 Torr 3.1: diisobutylaluminium hydride / dichloromethane / 0.5 h / -78 °C 3.2: 16 h / 20 °C View Scheme

1.1: tetrahydrofuran / 2 h / -78 °C 2.1: tetrafluoroboric acid; 3-chloro-benzenecarboperoxoic acid / dichloromethane; water / 48 h / 20 °C 2.2: 48 h / 20 °C / 3800.26 Torr 3.1: diisobutylaluminium hydride / dichloromethane / 0.5 h / -78 °C 3.2: 16 h / 20 °C View Scheme

1.1: tetrafluoroboric acid; 3-chloro-benzenecarboperoxoic acid / dichloromethane; water / 48 h / 20 °C 1.2: 48 h / 20 °C / 3800.26 Torr 2.1: diisobutylaluminium hydride / dichloromethane / 0.5 h / -78 °C 2.2: 16 h / 20 °C View Scheme

1.1: tetrafluoroboric acid; 3-chloro-benzenecarboperoxoic acid / dichloromethane; water / 48 h / 20 °C 1.2: 48 h / 20 °C / 3800.26 Torr 2.1: diisobutylaluminium hydride / dichloromethane / 0.5 h / -78 °C 2.2: 16 h / 20 °C View Scheme