Hydrochloric Acid → 90060-20-1

Participants

Reaction Conditions

Reaction Steps

A mixture of 10.0 g of 5,6-dihydroxy-2-methylamino-1-tetralone hydrobromide, 2.0 g of Pd/C 5%, 90 ml of water and 10 ml of 37% HCl is hydrogenated in an autoclave (Hastelloy) (20 atm, 80° C.) for 8-9 hours, then is filtered washing with hot water. The aqueous solution is concentrated under vacuum and the resulting solid is warm triturated with 100 ml of 37% hydrochloric acid, then cooled to 0° C. and filtered. The resulting solid is recrystallized from acetone and dried under vacuum at 60° C. Yield: 7.4 g.

Provenance & Evidence