Thionyl Chloride → N-(4-{2-[4-(chloromethyl)-3-fluorophenyl]ethyl}-1,3-thiazol-2-yl)acetamide

Participants

Reaction Steps

To a solution of N-(4-{2-[3-fluoro-4-(hydroxymethyl)phenyl]ethyl}-1,3-thiazol-2-yl)acetamide (196.6% mg, 0.668 mmol) in chloroform (10 ml) was added thionyl chloride (0.144 ml, 2.00 mmol), and the mixture was stirred at room temperature for 1 hr. Thionyl chloride (0.077 ml, 1.00 mmol) was added, and the mixture was stirred at room temperature for 1 hr and concentrated. Ethyl acetate (10 ml) was added to the residue, and the mixture was concentrated again under reduced pressure. The operation was performed 3 times to remove thionyl chloride azeotropically. A mixture of ethyl acetate (1 ml) and diisopropyl ether (10 ml) was added to the residue, and the precipitate was collected by filtration and dried under reduced pressure to give N-(4-{2-[4-(chloromethyl)-3-fluorophenyl]ethyl}-1,3-thiazol-2-yl)acetamide (205.3 mg, 0.656 mmol, yield 98.3%) as a slightly yellow solid.

Provenance & Evidence