1: 75 percent / 0.5 h / 110 °C 2: 90 percent / Gilotherm / 0.17 h / 255 °C 3: 1.) K2CO3; 2.) 10percent NaOH / 1.) dimethylformamide, 70 deg C; 2.) reflux, 0.5-2 h View Scheme

1: 90 percent / Gilotherm / 0.17 h / 255 °C 2: 1.) K2CO3; 2.) 10percent NaOH / 1.) dimethylformamide, 70 deg C; 2.) reflux, 0.5-2 h View Scheme

sodium hydroxide; potassium carbonate 1.) dimethylformamide, 70 deg C; 2.) reflux, 0.5-2 h; Yield given. Multistep reaction;