1.1: pyridine hydrogenfluoride / tetrahydrofuran; acetonitrile / 5 h / 0 - 20 °C / Inert atmosphere 2.1: 1H-imidazole; iodine; triphenylphosphine / diethyl ether; acetonitrile / 1 h / 0 - 20 °C 3.1: potassium tert-butylate / tetrahydrofuran / 2 h / 0 - 25 °C / Inert atmosphere 4.1: lithium hydroxide hydrate / methanol; water / 24 h / 70 °C 4.2: Inert atmosphere 5.1: triphenylphosphine; diethylazodicarboxylate / diethyl ether; benzene / 14 h / 20 °C 6.1: pyridinium p-toluenesulfonate / ethanol / 1 h / 60 °C 7.1: RuCl2(tricyclohexylphosphine)2(benzylidene) / toluene / 23 h / 80 °C / Inert atmosphere 8.1: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / dichloromethane; dimethyl sulfoxide / 0.5 h / 20 °C / Inert atmosphere 9.1: aluminium(III) iodide; tetra-(n-butyl)ammonium iodide / benzene / 10 °C View Scheme

1.1: 1H-imidazole; iodine; triphenylphosphine / diethyl ether; acetonitrile / 1 h / 0 - 20 °C 2.1: potassium tert-butylate / tetrahydrofuran / 2 h / 0 - 25 °C / Inert atmosphere 3.1: lithium hydroxide hydrate / methanol; water / 24 h / 70 °C 3.2: Inert atmosphere 4.1: triphenylphosphine; diethylazodicarboxylate / diethyl ether; benzene / 14 h / 20 °C 5.1: pyridinium p-toluenesulfonate / ethanol / 1 h / 60 °C 6.1: RuCl2(tricyclohexylphosphine)2(benzylidene) / toluene / 23 h / 80 °C / Inert atmosphere 7.1: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / dichloromethane; dimethyl sulfoxide / 0.5 h / 20 °C / Inert atmosphere 8.1: aluminium(III) iodide; tetra-(n-butyl)ammonium iodide / benzene / 10 °C View Scheme

1.1: potassium tert-butylate / tetrahydrofuran / 2 h / 0 - 25 °C / Inert atmosphere 2.1: lithium hydroxide hydrate / methanol; water / 24 h / 70 °C 2.2: Inert atmosphere 3.1: triphenylphosphine; diethylazodicarboxylate / diethyl ether; benzene / 14 h / 20 °C 4.1: pyridinium p-toluenesulfonate / ethanol / 1 h / 60 °C 5.1: RuCl2(tricyclohexylphosphine)2(benzylidene) / toluene / 23 h / 80 °C / Inert atmosphere 6.1: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / dichloromethane; dimethyl sulfoxide / 0.5 h / 20 °C / Inert atmosphere 7.1: aluminium(III) iodide; tetra-(n-butyl)ammonium iodide / benzene / 10 °C View Scheme

1: pyridinium p-toluenesulfonate / dichloromethane / 0.5 h / 20 °C / Inert atmosphere 2: tetrabutyl ammonium fluoride / tetrahydrofuran / 5 h / 0 - 20 °C / Inert atmosphere 3: triphenylphosphine; diethylazodicarboxylate / diethyl ether; benzene / 14 h / 20 °C 4: pyridinium p-toluenesulfonate / ethanol / 1 h / 60 °C 5: RuCl2(tricyclohexylphosphine)2(benzylidene) / toluene / 23 h / 80 °C / Inert atmosphere 6: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / dichloromethane; dimethyl sulfoxide / 0.5 h / 20 °C / Inert atmosphere 7: aluminium(III) iodide; tetra-(n-butyl)ammonium iodide / benzene / 10 °C View Scheme

1: tetrabutyl ammonium fluoride / tetrahydrofuran / 5 h / 0 - 20 °C / Inert atmosphere 2: triphenylphosphine; diethylazodicarboxylate / diethyl ether; benzene / 14 h / 20 °C 3: pyridinium p-toluenesulfonate / ethanol / 1 h / 60 °C 4: RuCl2(tricyclohexylphosphine)2(benzylidene) / toluene / 23 h / 80 °C / Inert atmosphere 5: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / dichloromethane; dimethyl sulfoxide / 0.5 h / 20 °C / Inert atmosphere 6: aluminium(III) iodide; tetra-(n-butyl)ammonium iodide / benzene / 10 °C View Scheme

1: triphenylphosphine; diethylazodicarboxylate / diethyl ether; benzene / 14 h / 20 °C 2: pyridinium p-toluenesulfonate / ethanol / 1 h / 60 °C 3: RuCl2(tricyclohexylphosphine)2(benzylidene) / toluene / 23 h / 80 °C / Inert atmosphere 4: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / dichloromethane; dimethyl sulfoxide / 0.5 h / 20 °C / Inert atmosphere 5: aluminium(III) iodide; tetra-(n-butyl)ammonium iodide / benzene / 10 °C View Scheme

1: pyridinium p-toluenesulfonate / ethanol / 1 h / 60 °C 2: RuCl2(tricyclohexylphosphine)2(benzylidene) / toluene / 23 h / 80 °C / Inert atmosphere 3: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / dichloromethane; dimethyl sulfoxide / 0.5 h / 20 °C / Inert atmosphere 4: aluminium(III) iodide; tetra-(n-butyl)ammonium iodide / benzene / 10 °C View Scheme

1: RuCl2(tricyclohexylphosphine)2(benzylidene) / toluene / 23 h / 80 °C / Inert atmosphere 2: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / dichloromethane; dimethyl sulfoxide / 0.5 h / 20 °C / Inert atmosphere 3: aluminium(III) iodide; tetra-(n-butyl)ammonium iodide / benzene / 10 °C View Scheme

1: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / dichloromethane; dimethyl sulfoxide / 0.5 h / 20 °C / Inert atmosphere 2: aluminium(III) iodide; tetra-(n-butyl)ammonium iodide / benzene / 10 °C View Scheme

1.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 2 h / 0 - 20 °C / Inert atmosphere 2.1: (R,R)-Co-salen; acetic acid / water; toluene / 20 °C / Cooling with ice 3.1: lithium aluminium tetrahydride / tetrahydrofuran / 4 h / 0 - 20 °C / Inert atmosphere 4.1: 1H-imidazole; 4-(N,N-dimethlyamino)pyridine / dichloromethane / 4 h / 0 - 25 °C / Inert atmosphere 5.1: pyridinium p-toluenesulfonate / ethanol / 1 h / 60 °C 6.1: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / dichloromethane; dimethyl sulfoxide / 0.5 h / 20 °C / Inert atmosphere 7.1: magnesium / tetrahydrofuran / 0.5 h / 20 - 25 °C / Inert atmosphere 7.2: 1 h / Inert atmosphere 8.1: pyridinium p-toluenesulfonate / dichloromethane / 0.5 h / 20 °C / Inert atmosphere 9.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 5 h / 0 - 20 °C / Inert atmosphere 10.1: triphenylphosphine; diethylazodicarboxylate / diethyl ether; benzene / 14 h / 20 °C 11.1: pyridinium p-toluenesulfonate / ethanol / 1 h / 60 °C 12.1: RuCl2(tricyclohexylphosphine)2(benzylidene) / toluene / 23 h / 80 °C / Inert atmosphere 13.1: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / dichloromethane; dimethyl sulfoxide / 0.5 h / 20 °C / Inert atmosphere 14.1: aluminium(III) iodide; tetra-(n-butyl)ammonium iodide / benzene / 10 °C View Scheme