1: triethylamine / dichloromethane / 12 h / |Inert atmosphere; |Reflux 2: lithium aluminium tetrahydride / tetrahydrofuran / 24 h / 0 °C / |Reflux 3: formic acid; dihydrogen peroxide / 12 h / 20 °C View Scheme

1: triethylamine / dichloromethane / 2 h / 0 - 2 °C 2: triethylamine / dichloromethane / 12 h / |Inert atmosphere; |Reflux 3: lithium aluminium tetrahydride / tetrahydrofuran / 24 h / 0 °C / |Reflux 4: formic acid; dihydrogen peroxide / 12 h / 20 °C View Scheme

formic acid; dihydrogen peroxide T=20°C; 12 h;

1: lithium aluminium tetrahydride / tetrahydrofuran / 24 h / 0 °C / |Reflux 2: formic acid; dihydrogen peroxide / 12 h / 20 °C View Scheme