sodium hydrogencarbonate in benzene 0.166667 h; Ambient temperature;

1: 74.5 percent / polyphosphoric acid (PPA) / 1.25 h / 75 °C 2: 96 percent / LAH / tetrahydrofuran / 3 h / Ambient temperature 3: 98.5 percent / MgSO4 / benzene / 1 h / Heating 4: 64 percent / NaHCO3 / benzene / 0.17 h / Ambient temperature View Scheme

1: 69 percent / AlCl3 / nitrobenzene / 12 h / Ambient temperature 2: 94 percent / Et3SiH, CF3CO2H / 6 h 3: 74.5 percent / polyphosphoric acid (PPA) / 1.25 h / 75 °C 4: 96 percent / LAH / tetrahydrofuran / 3 h / Ambient temperature 5: 98.5 percent / MgSO4 / benzene / 1 h / Heating 6: 64 percent / NaHCO3 / benzene / 0.17 h / Ambient temperature View Scheme

1: 98.5 percent / MgSO4 / benzene / 1 h / Heating 2: 64 percent / NaHCO3 / benzene / 0.17 h / Ambient temperature View Scheme

1: 94 percent / Et3SiH, CF3CO2H / 6 h 2: 74.5 percent / polyphosphoric acid (PPA) / 1.25 h / 75 °C 3: 96 percent / LAH / tetrahydrofuran / 3 h / Ambient temperature 4: 98.5 percent / MgSO4 / benzene / 1 h / Heating 5: 64 percent / NaHCO3 / benzene / 0.17 h / Ambient temperature View Scheme

1: 96 percent / LAH / tetrahydrofuran / 3 h / Ambient temperature 2: 98.5 percent / MgSO4 / benzene / 1 h / Heating 3: 64 percent / NaHCO3 / benzene / 0.17 h / Ambient temperature View Scheme

1: 97 percent / DDQ / CH2Cl2 / 0.17 h / Ambient temperature 2: 88.6 percent / 1.) BBr3 / CH2Cl2 / 1.) RT, 10 h, 2.) RT, 5 h View Scheme

triethylsilane; trifluoroacetic acid in benzene 5 h; Ambient temperature;