sodium methylate 1.) EtOH, reflux, 20 h, 2.) DMF, 30 deg C, 2 h; Yield given. Multistep reaction;

Multi-step reaction with 4 steps 1: 85 percent / (n-Bu)4N(+)HSO4(-) / 1.) 3M aq. NaOH, reflux, 1 h, 2.) 6M aq. NaOH, reflux, 1 h2: 94 percent / (CF3CO)2O / 70 h / 20 °C3: 1.) Mg, BrCH2CH2Br / 1.) ether, 20 deg C, 1 h, 2.) 20 h, r.t.4: conc. HCl / 4 h / Heating