1: NaH / dimethylformamide / 12 h / 20 °C 2: LAH / tetrahydrofuran / 4 h / 20 °C 3: 61.6 percent / N-methylquinolinium hexafluorophosphate; sodium thiosulfate; NaOAc / toluene; 1,2-dichloro-ethane / 4 h / 20 °C / Irradiation View Scheme

1.1: BH3*THF / tetrahydrofuran / 1 h / 0 °C 1.2: 58 percent / aq. H2O2; aq. NaOH / tetrahydrofuran / 0.5 h 2.1: 55 percent / N-methylquinolinium hexafluorophosphate; sodium acetate; tert-butylbenzene / 1,2-dichloro-ethane / 4 h / 20 °C / UV-irradiation View Scheme

1.1: 92 percent / anhydrous potassium carbonate / dimethylformamide / 36 h / 20 °C 2.1: Grubbs' second generation metathesis catalyst / CH2Cl2 / 0.5 h / Heating 2.2: ethyl vinyl ether / CH2Cl2 / 0.25 h 2.3: 21 mg / N-methylquinolinium hexafluorophosphate; sodium acetate; anhydrous sodium thiosulfate / O2 / 1,2-dichloro-ethane; toluene / 5 h / 20 °C / Irradiation View Scheme

1.1: 95.7 percent / PPTs / methanol / 20 °C 2.1: 92 percent / anhydrous potassium carbonate / dimethylformamide / 36 h / 20 °C 3.1: Grubbs' second generation metathesis catalyst / CH2Cl2 / 0.5 h / Heating 3.2: ethyl vinyl ether / CH2Cl2 / 0.25 h 3.3: 21 mg / N-methylquinolinium hexafluorophosphate; sodium acetate; anhydrous sodium thiosulfate / O2 / 1,2-dichloro-ethane; toluene / 5 h / 20 °C / Irradiation View Scheme