diethylamino-sulfur trifluoride in dichloromethane T=20°C; 2 h;

potassium fluoride in 1-methyl-pyrrolidin-2-one T=200°C; 5 h; Inert atmosphere;

1: water; potassium carbonate / methanol / 2 h / 25 °C / Inert atmosphere 2: potassium fluoride / 1-methyl-pyrrolidin-2-one / 5 h / 200 °C / Inert atmosphere View Scheme

1: copper(l) iodide; potassium fluoride / dimethyl sulfoxide / 15 h / 60 °C / Inert atmosphere 2: water; potassium carbonate / methanol / 2 h / 25 °C / Inert atmosphere 3: potassium fluoride / 1-methyl-pyrrolidin-2-one / 5 h / 200 °C / Inert atmosphere View Scheme

sodium hydroxide in water Heating;