Hydrochloric Acid → 6-(4-methoxyphenyl)-2,3,4,5-tetrahydro-1H-azepine hydrochloride

Participants

Reaction Steps

A solution of tert-butyl 3-hydroxy-3-(4-methoxyphenyl)azepane-1-carboxylate (0.25 g, 0.78 mmol) in HCl (4M solution in dioxane) (3 mL, 12 mmol) was stirred at room temperature for 5 h. The reaction mixture was concentrated and the residue was titurated with diethyl ether to yield 6-(4-methoxyphenyl)-2,3,4,5-tetrahydro-1H-azepine hydrochloride (0.18 g, 62%) as a black gum. LCMS: R.T. 0.60 min. LCMS (ES-API), m/z 204 (M+1).

Provenance & Evidence