Hydrochloric Acid → 4,5,6,7-Tetrahydrothieno[3,2-c]pyridine-2-carboxylic acid hydrochloride

Participants

Reaction Conditions

Reaction Steps

A solution of diethyl 6,7-dihydrothieno[3,2-c]pyridine-2,5(4H)-dicarboxylate (1.76 mmol) in 3.5 N potassium hydroxide solution (3 ml) was heated under reflux for 3 hours. The course of the reaction was monitored by thin layer chromatography. The reaction mixture was then cooled to 0° C. and acidified with concentrated hydrochloric acid. The solid which had precipitated was filtered out and dried. The desired product was obtained in a yield of 30%.

Provenance & Evidence