1: 0.162 g / methanol / 3 h 2: 84 percent / NaH / tetrahydrofuran / 6 h 3: 85 percent / TFA / CH2Cl2 / 1 h / 20 °C View Scheme

potassium carbonate; lithium (hydro)trimethoxyaluminate 1) MeCN, 2) THF, reflux, 40 h; Yield given. Multistep reaction;