HCID 3938916, compound → HCID 22719960, compound

Participants

Reaction Conditions

Reaction Steps

4 M hydrogen chloride/ethyl acetate solution (3 ml) was added to a suspension of N-[3-(2-Hydroxyethyl)amino-1,4-dihydro-1,4-dioxo-2-naphthalenyl]-N-methylacetamide (0.4 g) in ethanol (3 ml) and the mixture was stirred at 45° C. for 1 hour. After cooling, the resulting precipitate was collected by filtration and washed with ethyl acetate. The obtained solid was recrystallized from ethanol-ethyl acetate to give 1-(2-hydroxyethyl)-2,3-dimethyl-4,9-dihydro-4,9-dioxo-1H-naphtho[2,3-d]imidazol-3-ium chloride (0.28 g) as a colorless powder.

Provenance & Evidence