Hydrochloric Acid → (R)-4-(3,4-dichlorophenyl)butan-2-amine hydrochloride

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Reaction Steps

(S)-N-((R)-4-(3,4-Dichlorophenyl)butan-2-yl)-2-methylpropane-2-sulfinamide (600 mg, 1.862 mmol) was stirred in MeOH (10 mL) at rt. 4N HCl in dioxane (5 mL) was added. The resulting mixture was stirred at rt for 20 min. The solvents were evaporated and CH2Cl2 (3×) was added and evaporated. The resulting white solids were vacuum dried for 5 h to give (R)-4-(3,4-dichlorophenyl)butan-2-amine hydrochloride (462 mg, 1.815 mmol, 97% yield) as off-white solids and methyl 2-methylpropane-2-sulfinate. The HCl salt was used without further purification. LC-MS (ESI) m/z 218.0 (M+H), RT=1.61 min (Method B).

Provenance & Evidence