Potassium Carbonate → 4-Chloro-3-(2-methyl-5-nitro-phenoxymethyl)-thieno[3,2-c]pyridine-7-carboxylic acid ethyl ester

Participants

Reaction Conditions

Reaction Steps

A mixture of 2-methyl-5-nitrophenol (960 mg, 6.07 mmol) (Avocado) and potassium carbonate powder (913 mg, 6.61 mmol) in dry THF (20 mL) and DMF (10 mL) was stirred at 50° C. for 15 minutes before a solution of 3-bromomethyl-4-chloro-thieno[3,2-c]pyridine-7-carboxylic acid ethyl ester (1.997 g, 5.969 mmol) (from Example 1 supra) in THF (20 mL) was added. The reaction was stirred at 50° C. for 10 hours and the resulting precipitate was collected. The filtrate was concentrated to give more precipitate. The combined solid was stirred in water (30 mL), filtered, washed with water and dried overnight to give 4-chloro-3-(2-methyl-5-nitro-phenoxymethyl)-thieno[3,2-c]pyridine-7-carboxylic acid ethyl ester as a white solid. (Yield 1.647 g, 68%).

Provenance & Evidence