Dopamine Hydrochloride → HCID 20323709, compound

Participants

Reaction Steps

Conc. hydrochloric acid (2 drops) was added to a solution of 3,4-dihydroxyphenethylamine hydrochloride (1.8 g.) and (1,3,4-thiadiazol-2-yl)aminoacetaldehyde diethyl acetal (3.1 g.) in a mixture of ethanol (60 ml) and water (15 ml.). The resulting mixture was refluxed for 18 hours. After cooling, the reaction mixture was allowed to stand at ambient temperature. Precipitating crystals were collected by filtration and washed with ethanol to give 1-(1,3,4-thiadiazol-2-yl)aminomethyl-6,7-dihydroxy-1,2,3,4-tetrahydroisoquinoline hydrochloride (1.0 g.).

Provenance & Evidence