1: 80 percent / acetone / 10 h / Irradiation 2: 95 percent / 520 °C / 0.01 Torr 3: 94 percent / H2 / Pd/C / ethanol / 6 h 4: 90 percent / LDA; THF / hexamethylphosphoric acid triamide / 5 h / -78 - 20 °C 5: 88 percent / lithium aluminium hydride / tetrahydrofuran / Heating 6: 96 percent / pyridine; DMAP / 24 h 7: 70 percent / sodium cyanoborohydride / hexamethylphosphoric acid triamide / 24 h / 130 °C 8: 18 percent / CrO3; glacial CH3COOH / H2O / 5 h View Scheme

chromium(VI) oxide; acetic acid in water 5 h;

1: 96 percent / pyridine; DMAP / 24 h 2: 70 percent / sodium cyanoborohydride / hexamethylphosphoric acid triamide / 24 h / 130 °C 3: 18 percent / CrO3; glacial CH3COOH / H2O / 5 h View Scheme

1: 90 percent / LDA; THF / hexamethylphosphoric acid triamide / 5 h / -78 - 20 °C 2: 88 percent / lithium aluminium hydride / tetrahydrofuran / Heating 3: 96 percent / pyridine; DMAP / 24 h 4: 70 percent / sodium cyanoborohydride / hexamethylphosphoric acid triamide / 24 h / 130 °C 5: 18 percent / CrO3; glacial CH3COOH / H2O / 5 h View Scheme

1: 88 percent / lithium aluminium hydride / tetrahydrofuran / Heating 2: 96 percent / pyridine; DMAP / 24 h 3: 70 percent / sodium cyanoborohydride / hexamethylphosphoric acid triamide / 24 h / 130 °C 4: 18 percent / CrO3; glacial CH3COOH / H2O / 5 h View Scheme

1: 95 percent / i-Pr2NH / CH2Cl2 / 14 h 2: 87 percent / LDA; THF / hexamethylphosphoric acid triamide / 6 h / -78 - 20 °C 3: 85 percent / lithium aluminium hydride / tetrahydrofuran / 5 h 4: 95 percent / pyridine; DMAP / 26 h 5: dimethyl sulfide; BF3*Et2O / 2 h / -10 °C View Scheme

1: 87 percent / LDA; THF / hexamethylphosphoric acid triamide / 6 h / -78 - 20 °C 2: 85 percent / lithium aluminium hydride / tetrahydrofuran / 5 h 3: 95 percent / pyridine; DMAP / 26 h 4: dimethyl sulfide; BF3*Et2O / 2 h / -10 °C View Scheme

1: 85 percent / lithium aluminium hydride / tetrahydrofuran / 5 h 2: 95 percent / pyridine; DMAP / 26 h 3: dimethyl sulfide; BF3*Et2O / 2 h / -10 °C View Scheme

1: 70 percent / sodium cyanoborohydride / hexamethylphosphoric acid triamide / 24 h / 130 °C 2: 18 percent / CrO3; glacial CH3COOH / H2O / 5 h View Scheme

1: 95 percent / pyridine; DMAP / 26 h 2: dimethyl sulfide; BF3*Et2O / 2 h / -10 °C View Scheme