Sodium Dithionite → HCID 136354628, compound

Participants

Reaction Steps

Sodium dithionite (10.8 g.) was added during 5 minutes to a stirred suspension of the crude sodium salt of 4-amino-2-(5-methyl-2-propoxyphenyl)-5-nitrosopyrimid-6-one (9.3 g.) in water (180 ml.). Stirring was continued for a further 105 minutes, and solid obtained was filtered off, washed with water, and recrystallised from aqueous ethanol to give 4,5-diamino-2-(5-methyl-2-propoxyphenyl)pyrimid-6-one (4.9 g.), m.p. 184°-188° C. (with decomposition).

Provenance & Evidence