1: NaHCO3 / ethanol / 1 h / Heating 2: 57 percent / selenium dioxide, N-methylmorpholine-N-oxide / acetonitrile; CH2Cl2; 1,2-dichloro-ethane / 0.09 h / Heating 3: 82 percent / triethylamine, anthracene / benzene / 0.5 h / Irradiation 4: imidazole / CH2Cl2 / 0.25 h / Ambient temperature 5: 1.) Mg, cuprous iodide, 2.) n-Bu4NF View Scheme

1: NaHCO3 / ethanol / 1 h / Heating 2: 1.) Mg, cuprous iodide, 2.) n-Bu4NF 3: 82 percent / triethylamine, anthracene / benzene / 1 h / Irradiation View Scheme