1: acetone / 2 h / Heating 2: ethyl acetate / 1 h / Heating 3: K2CO3, H20 / methanol / 0.5 h / 0 °C 4: 2.) 20percent aq. TiCl3 / Raney Ni W-2 / 1) ethanol, reflux, 3 h 2) acetone, RT, 1 h 5: 1.) aq. NaOH, 2.) p-toluenesulfonic acid / 1) ethanol, reflux, 2h, 2) AcOH, 100 C, 2 h View Scheme