1: tetrahydrofuran / 2 h / |Reflux 2: sodium periodate; RuCl3*4H2O / acetonitrile; water / 1 h / 20 °C 3: sulfuric acid / water / 2 h / 110 °C View Scheme

1.1: sodium hydroxide / ethanol / 0.5 h 1.2: 3 h / 20 °C 2.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 16 h / 0 °C 3.1: tetrahydrofuran / 2 h / |Reflux 4.1: sodium periodate; RuCl3*4H2O / acetonitrile; water / 1 h / 20 °C 5.1: sulfuric acid / water / 2 h / 110 °C View Scheme

1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 16 h / 0 °C 2: tetrahydrofuran / 2 h / |Reflux 3: sodium periodate; RuCl3*4H2O / acetonitrile; water / 1 h / 20 °C 4: sulfuric acid / water / 2 h / 110 °C View Scheme