1.1: LHMDS / tetrahydrofuran / 1 h / -78 °C 1.2: 52 percent / tetrahydrofuran / 0.5 h / -78 °C 2.1: 62 percent / KHMDS / tetrahydrofuran; toluene / 3 h / -78 - 20 °C 3.1: NaH / dimethylformamide / 0 °C 3.2: 44 percent / dimethylformamide / 6 h / 0 °C 4.1: SmI2 / tetrahydrofuran / 0.17 h / 20 °C 4.2: 95 percent / D2O / tetrahydrofuran / 1 h 5.1: 83 percent / aq. cerium ammonium nitrate / acetonitrile / 1 h / 20 °C 6.1: aq. HCl / 36 h / Heating View Scheme

1.1: LHMDS / tetrahydrofuran / 1 h / -78 °C 1.2: 52 percent / tetrahydrofuran / 0.5 h / -78 °C 2.1: 62 percent / KHMDS / tetrahydrofuran; toluene / 3 h / -78 - 20 °C 3.1: NaH / dimethylformamide / 0 °C 3.2: 44 percent / dimethylformamide / 6 h / 0 °C 4.1: SmI2 / tetrahydrofuran / 0.17 h / 20 °C 4.2: 95 percent / D2O / tetrahydrofuran / 1 h 5.1: 83 percent / aq. cerium ammonium nitrate / acetonitrile / 1 h / 20 °C 6.1: aq. HCl / 36 h / Heating 6.2: SOCl2 / 12 h / 20 °C View Scheme