Hydrochloric Acid → 5,6,7,8-Tetrahydro-2-naphthylamine

Participants

Reaction Steps

7-Nitrotetralone (Formula 10) is dissolved in a solvent, such as ethanol or methanol, preferably ethanol (about 4 L/mole). To this solution is added water (about 400 ml/mmol), concentrated HCl (about 95 ml/mmol) and 10% palladium on carbon (about 40 g/mmol). The reaction mixture is hydrogenated at a pressure of about 30-40 psi for a period of about 12 to 24 hours, preferably about 18 hours. When the reaction is substantially compete, 2-amino-5,6,7,8-tetrahydronaphthalene of Formula 11 is isolated and purified by conventional means, preferably by preparative TLC or flash column chromatography.

Provenance & Evidence