1: 74 percent / N-Bromsuccinimid, (PhCO)2O / benzene / 3 h / Heating 2: 60 percent / dimethylsulfoxide / 4 h / 110 °C 3: 1) NaOCH3 / 1) benzen, dimethylcarbonate, 3h, reflux, 2) 1h, reflux View Scheme

1: 60 percent / dimethylsulfoxide / 4 h / 110 °C 2: 1) NaOCH3 / 1) benzen, dimethylcarbonate, 3h, reflux, 2) 1h, reflux View Scheme

sodium methylate 1) benzen, dimethylcarbonate, 3h, reflux, 2) 1h, reflux; Yield given. Multistep reaction;