1.1: 89 percent / NaHCO3 / ethanol / 12 h / sonification 2.1: LHMDS / tetrahydrofuran / 1 h / -78 °C 2.2: 52 percent / tetrahydrofuran / 0.5 h / -78 °C 3.1: 62 percent / KHMDS / tetrahydrofuran; toluene / 3 h / -78 - 20 °C 4.1: NaH / dimethylformamide / 0 °C 4.2: 44 percent / dimethylformamide / 6 h / 0 °C 5.1: SmI2 / tetrahydrofuran / 0.17 h / 20 °C 5.2: 95 percent / D2O / tetrahydrofuran / 1 h 6.1: 83 percent / aq. cerium ammonium nitrate / acetonitrile / 1 h / 20 °C 7.1: aq. HCl / 36 h / Heating View Scheme

1.1: 89 percent / NaHCO3 / ethanol / 12 h / sonification 2.1: LHMDS / tetrahydrofuran / 1 h / -78 °C 2.2: 52 percent / tetrahydrofuran / 0.5 h / -78 °C 3.1: 62 percent / KHMDS / tetrahydrofuran; toluene / 3 h / -78 - 20 °C 4.1: NaH / dimethylformamide / 0 °C 4.2: 44 percent / dimethylformamide / 6 h / 0 °C 5.1: SmI2 / tetrahydrofuran / 0.17 h / 20 °C 5.2: 95 percent / D2O / tetrahydrofuran / 1 h 6.1: 83 percent / aq. cerium ammonium nitrate / acetonitrile / 1 h / 20 °C 7.1: aq. HCl / 36 h / Heating 7.2: SOCl2 / 12 h / 20 °C View Scheme