1: 75 percent / LiHMDS / tetrahydrofuran; hexamethylphosphoric acid triamide / 0.08 h / -78 °C 2: 1.) SOCl2; 2.) NaHCO3 / 1.) pyridine; 2.) CDCl3, 125 deg C, 30 min View Scheme

thionyl chloride; sodium hydrogencarbonate 1.) pyridine; 2.) CDCl3, 125 deg C, 30 min; Yield given. Multistep reaction;