Hydrochloric Acid → HCID 21200190, compound

Participants

Reaction Steps

To a 500 mL round-bottomed flask fitted with a magnetic stirrer, a condenser and a nitrogen atmosphere are added 2.33 g (5.74 mmol) of the product of Example 11 and 25 mL of m-xylene. The mixture is stirred with warming and, when it becomes homogeneous at about 40° C., 1.84 g (0.0138 mol) of aluminum chloride are added all at once. The mixture is brought to reflux and stirred at this temperature for three hours. After cooling to room temperature, a 100 mL portion of 2N hydrochloric acid is added. The mixture is heated with stirring for 15 minutes and allowed to cool. Portions of ethyl acetate and heptane are added and the solids formed are collected by vacuum filtration. The solids are washed with ethyl acetate and water, then dried to afford 2.58 g of the title compound as an off-white solid.

Provenance & Evidence