1: aq. KOAc / acetone / 24 h / 20 °C 2: 80 percent / pyridinium dichromate / CH2Cl2 / 1.5 h / Ambient temperature View Scheme

1: aq. KOAc / acetone / 24 h / 20 °C 2: 80 percent / pyridinium dichromate / CH2Cl2 / 1.5 h / Ambient temperature 3: 90 percent / lithium tris<(3-ethyl-3-pentyl)oxy>aluminium hydride View Scheme

potassium acetate; acetic acid in acetone T=20°C; 24 h; Title compound not separated from byproducts;

potassium acetate in acetone T=20°C; 24 h; Title compound not separated from byproducts;