1: 45.6 percent / benzene / 2 h / Irradiation 2: sodium bicarbonate, manganous chloride, O2 / methanol; H2O / 0.75 h View Scheme

1: aq. KOH / ethanol 2: petroleum ether / Irradiation View Scheme

1: 45.6 percent / benzene / 2 h / Irradiation 2: sodium bicarbonate, manganous chloride, O2 / methanol; H2O / 0.75 h 3: 71.3 percent / 1) ceric ammonium nitrate / acetone / 2.5 h / 1) -10 degC, 2.5 h, 2) room temperature, ca. 45 min 4: benzene-d6 / 2 h / 5 °C / Irradiation View Scheme

potassium hydroxide in ethanol