Potassium Iodide → 6-Acetyl-3-ethyl-2-(2-(4-(5-methylbenzo(b)-furan-3-yl)piperidin-1-yl)ethyl)-4,5,6,7-tetrahydrothieno[2,3-c]pyridine hydrochloride

Participants

Reaction Conditions

Reaction Steps

A mixture of 5.0 g of 6-acetyl-2-(2-chloroethyl)-3-ethyl-4,5,6,7-tetrahydrothieno[2,3-c]pyridine, 4.9 g of 4-(5-methylbenzo(b)furan-3-yl)piperidine hydrochloride, 2.5 g of potassium carbonate, 3.0 g of potassium iodide, 30 ml of dimethylformamide and 30 ml of toluene was stirred at 70° C. for 7 hours and then poured into water. The toluene layer was washed with water, dried over anhydrous magnesium sulfate and concentrated. The residue was purified by column chromatography on a silica gel and then dissolved into ethanol to make a hydrochloride. The resulting crystals were recrystallized from isopropyl alcohol to give 6-acetyl-3-ethyl-2-(2-(4-(5-methylbenzo(b)-furan-3-yl)piperidin-1-yl)ethyl)-4,5,6,7-tetrahydrothieno[2,3-c]pyridine hydrochloride, m.p. 222°-225° C.

Provenance & Evidence