1: 1.) n-C4H9Li / 1.) THF, hexane, -10 deg C, 6 h, 2.) THF, hexane, 20 deg C, 12 h 2: Zn/Ag / tetrahydrofuran / 24 h / 20 °C 3: NH4Cl, Zn/Cu / methanol / 1 h / 20 °C View Scheme

1: Zn/Ag / tetrahydrofuran / 24 h / 20 °C 2: NH4Cl, Zn/Cu / methanol / 1 h / 20 °C View Scheme

1: 1.) n-C4H9Li / 1.) THF, hexane, -10 deg C, 6 h, 2.) THF, hexane, 20 deg C, 12 h 2: Zn/Ag / tetrahydrofuran / 24 h / 20 °C 3: NH4Cl, Zn/Cu / methanol / 1 h / 20 °C View Scheme