Hydrochloric Acid → HCID 178448716, compound

Participants

Reaction Steps

3-Acetylamino-7-butyl-5-propylpyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-dione(10 g) was heated under reflux for 5 hours in 80% ethanol(100 ml) containing sodium hydroxide (2 g). The reaction mixture was concentrated to give crystals. The crystals were suspended in water(100 ml), to which was added 6N-HCl to make it weakly acid to afford colorless crystals(8 g,93%),m.p. 209°-211° C.

Provenance & Evidence