Hydrochloric Acid → HCID 20511278, compound

Participants

Reaction Steps

A mixture of 3,4-dihydroxyphenethylamine hydrochloride (2.4 g), (4-pyridyl)oxyacetaldehyde diethyl acetal (3.7 g), n-butanol (40 ml) and 1N-hydrochloric acid (20 ml) was refluxed for 15 hours under stirring. After the reaction, n-butanol was distilled off from the reaction mixture under reduced pressure. The residue was dissolved in water, and the solution was washed twice with chloroform and once with ether. The aqueous layer was concentrated, and the oily residue was allowed to stand to give crystals of 1-(4-pyridyl)oxymethyl-6,7-dihydroxy-1,2,3,4-tetrahydroisoquinoline dihydrochloride (4.7 g). The product was recrystallized from aqueous methanol to give needles, mp 250° to 255° C. (dec.).

Provenance & Evidence