aluminium trichloride in benzene T=50°C; 6 h;

1: 1) NaOC2H5 / 1) ethanol, 2) DMF, 1 h, 10 deg C 2: 1) 1 N NaOH / 1) methanol, 3 h, room temperature, 2) 15 min, 130 deg C 3: 91 percent / AlCl3 / benzene / 6 h / 50 °C View Scheme

1: 1) NaOC2H5 / 1) ethanol, 2) DMF, 1 h, 10 deg C 2: 1) 1 N NaOH / 1) methanol, 3 h, room temperature, 2) 15 min, 130 deg C 3: 91 percent / AlCl3 / benzene / 6 h / 50 °C View Scheme

1: 1) 1 N NaOH / 1) methanol, 3 h, room temperature, 2) 15 min, 130 deg C 2: 91 percent / AlCl3 / benzene / 6 h / 50 °C View Scheme