1: 90 percent / acetic acid / 14 h / Ambient temperature 2: 62 percent / H2 / 5percent Rh-Al2O3 / ethyl acetate / 14 h / Ambient temperature 3: CrO3*2py / CH2Cl2 / 0.17 h / Ambient temperature 4: benzene / 14 h / Heating 5: 57 percent / powdered zinc / acetic acid; H2O / 4 h / Ambient temperature 6: oxalyl chloride / 0.08 h / 40 °C 7: pyridine / tetrahydrofuran / 0.33 h / -30 - 0 °C 8: 1.) powdered zinc, 2.) powdered zinc, conc. HCl / 1.) -30 deg C to room temp, 1.5 h; room temp., 1.5 h, 2.) acetic acid, room temp., 3 h View Scheme

1: benzene / 14 h / Heating 2: 57 percent / powdered zinc / acetic acid; H2O / 4 h / Ambient temperature 3: oxalyl chloride / 0.08 h / 40 °C 4: pyridine / tetrahydrofuran / 0.33 h / -30 - 0 °C 5: 1.) powdered zinc, 2.) powdered zinc, conc. HCl / 1.) -30 deg C to room temp, 1.5 h; room temp., 1.5 h, 2.) acetic acid, room temp., 3 h View Scheme

1: oxalyl chloride / 0.08 h / 40 °C 2: pyridine / tetrahydrofuran / 0.33 h / -30 - 0 °C 3: 1.) powdered zinc, 2.) powdered zinc, conc. HCl / 1.) -30 deg C to room temp, 1.5 h; room temp., 1.5 h, 2.) acetic acid, room temp., 3 h View Scheme

1: pyridine / tetrahydrofuran / 0.33 h / -30 - 0 °C 2: 1.) powdered zinc, 2.) powdered zinc, conc. HCl / 1.) -30 deg C to room temp, 1.5 h; room temp., 1.5 h, 2.) acetic acid, room temp., 3 h View Scheme

1: CrO3*2py / CH2Cl2 / 0.17 h / Ambient temperature 2: benzene / 14 h / Heating 3: 57 percent / powdered zinc / acetic acid; H2O / 4 h / Ambient temperature 4: oxalyl chloride / 0.08 h / 40 °C 5: pyridine / tetrahydrofuran / 0.33 h / -30 - 0 °C 6: 1.) powdered zinc, 2.) powdered zinc, conc. HCl / 1.) -30 deg C to room temp, 1.5 h; room temp., 1.5 h, 2.) acetic acid, room temp., 3 h View Scheme

1: 57 percent / powdered zinc / acetic acid; H2O / 4 h / Ambient temperature 2: oxalyl chloride / 0.08 h / 40 °C 3: pyridine / tetrahydrofuran / 0.33 h / -30 - 0 °C 4: 1.) powdered zinc, 2.) powdered zinc, conc. HCl / 1.) -30 deg C to room temp, 1.5 h; room temp., 1.5 h, 2.) acetic acid, room temp., 3 h View Scheme

hydrogenchloride; zinc 1.) -30 deg C to room temp, 1.5 h; room temp., 1.5 h, 2.) acetic acid, room temp., 3 h; Yield given. Multistep reaction;