1.1: sodium iodide / acetone / 5 h / |Inert atmosphere; |Reflux 2.1: n-butyllithium; 2,2,6,6-tetramethyl-piperidine / tetrahydrofuran; hexane / 0.5 h / -78 - 0 °C / |Inert atmosphere; |Schlenk technique 3.1: 2,3-dicyano-5,6-dichloro-p-benzoquinone / toluene / 0.33 h / 0 °C / |Inert atmosphere 4.1: trimethylsilyl trifluoromethanesulfonate / dichloromethane / 1 h / 0 °C / |Inert atmosphere 5.1: water; sodium hydroxide / methanol / 0.5 h / |Reflux; |Inert atmosphere 6.1: Fremy’s salt / acetone / 0.33 h / 0 - 20 °C / pH 6.86 7.1: acetone / 0.5 h / 60 °C / |Sealed tube; |Inert atmosphere 7.2: 7 h / 70 °C / |Sealed tube; |Inert atmosphere View Scheme

1.1: sodium iodide / acetone / 5 h / |Inert atmosphere; |Reflux 2.1: n-butyllithium; 2,2,6,6-tetramethyl-piperidine / tetrahydrofuran; hexane / 0.67 h / -78 - 0 °C / |Inert atmosphere 2.2: 0.5 h / -78 - 0 °C / |Inert atmosphere 3.1: 2,3-dicyano-5,6-dichloro-p-benzoquinone / toluene / 0.33 h / 0 - 20 °C / |Inert atmosphere 4.1: trimethylsilyl trifluoromethanesulfonate / dichloromethane / 1 h / 0 °C / |Inert atmosphere 5.1: water; sodium hydroxide / methanol / 0.5 h / |Reflux; |Inert atmosphere 6.1: Fremy’s salt / acetone / 0.33 h / 0 - 20 °C / pH 6.86 / |Inert atmosphere 7.1: potassium carbonate / N,N-dimethyl-formamide / 0.17 h / 20 °C / |Inert atmosphere 8.1: ammonium chloride / ethanol / 0.33 h / |Inert atmosphere; |Reflux View Scheme

1: sodium iodide / acetone / 5 h / |Inert atmosphere; |Reflux 2: n-butyllithium; 2,2,6,6-tetramethyl-piperidine / tetrahydrofuran; hexane / 0.5 h / -78 - 0 °C / |Inert atmosphere; |Schlenk technique 3: 2,3-dicyano-5,6-dichloro-p-benzoquinone / toluene / 0.33 h / 0 °C / |Inert atmosphere 4: trimethylsilyl trifluoromethanesulfonate / dichloromethane / 1 h / 0 °C / |Inert atmosphere 5: water; sodium hydroxide / methanol / 0.5 h / |Reflux; |Inert atmosphere 6: sodium hydride / tetrahydrofuran; N,N-dimethyl-formamide / 1 h / 0 °C / |Inert atmosphere 7: salenCo(II); oxygen / N,N-dimethyl-formamide / 1 h / 20 °C / |Inert atmosphere 8: ammonium chloride / methanol / 13 h / 20 °C / |Inert atmosphere View Scheme