Hydrochloric Acid → 3-Ethynyl-3-methylpiperidine hydrochloride

Participants

Reaction Steps

To a stirred solution of tert-butyl 3-ethynyl-3-methylpiperidine-1-carboxylate (0.50 g, 2.24 mmol) in dichloromethane (10 mL) was added a solution of hydrogen chloride in 1,4-dioxane (3.0M, 5.0 mL, 15.00 mmol). The resulting solution was allowed to stir at room temperature. After 2 h, the mixture was concentrated to provide 0.34 g (95%) of 3-ethynyl-3-methylpiperidine hydrochloride (340 mg, 95%) as a white solid.

Provenance & Evidence