1: 1.) NaH / 1.) ether, -5-0 deg C, 10 min, 2.) ether, 10-15 deg C, 3 h 2: conc. HCl / CH2Cl2; diethyl ether / 0.25 h / 20 °C 3: 85 percent / 0.5N NaOH / ethanol / 6.5 h / Heating View Scheme

1: 1.) NaH / 1.) ether, -5-0 deg C, 10 min, 2.) ether, 10-15 deg C, 3 h 2: conc. HCl / CH2Cl2; diethyl ether / 0.25 h / 20 °C View Scheme