Hydrochloric Acid → alpha-(3,4-Dimethoxyphenyl)-3,4-dihydro-6,7-dimethoxy-alpha-[(4-methylphenyl)thio]-2(1H)-isoquinolinepentane-nitrile monohydrochloride

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Reaction Steps

To a solution of 1.43 g of α-(3,4-dimethoxyphenyl)-3,4-dihydro-6,7-dimethoxy-α-[(4-methylphenyl)thio]-2(1H)-isoquinolinepentanenitrile in 40 mL of diethyl ether, with stirring, is added 0.617 mL of a 4.71M solution of hydrogen chloride in absolute ethyl alcohol. The reaction mixture is then stirred for 15 hours while sealed. The title product is then collected by filtration, washed with ether, and dried under vacuum to give 1.32 g of the desired product as pink crystals.

Provenance & Evidence