Hydrochloric Acid → (R)-5-(2-aminopropyl)-1,3-benzodioxole-2,2-dicarboxylic acid diethyl ester hydrochloride

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Reaction Steps

A solution of (R)-5-[N-(t-butyloxycarbonyl)-2-aminopropyl]-1,3-benzodioxole-2,2-dicarboxylic acid diethyl ester (3.0 g, 7 mMol) in ethyl acetate (40 ml) and hydrogen chloride solution in diethyl ether (1M, 56 ml, 56 mMol) was stirred at ambient temperature under an argon atmosphere for 48 hours. The solvent was evaporated and the residue was dried giving the title compound as a glass.

Provenance & Evidence