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