1: 97 percent / CCl4 / Irradiation; sunlight for several days 2: 97 percent / NaIO4 / methanol; H2O / 24 h / Ambient temperature 3: 66 percent / PhSNa / methanol / 1.) reflux, 7 h, dark, 2.) room temperature, 18 h View Scheme

1: 87 percent / NaIO4 / methanol; H2O / 72 h / 20 °C 2: PhSNa / methanol / 72 h / Ambient temperature; dark View Scheme

1: 87 percent / NaIO4 / methanol; H2O / 72 h / 20 °C 2: PhSNa / methanol / 72 h / Ambient temperature; dark View Scheme

1: 97 percent / CCl4 / Irradiation; sunlight for several days 2: 97 percent / NaIO4 / methanol; H2O / 24 h / Ambient temperature View Scheme