Sulfuric Acid → HCID 13883806, compound

Participants

Reaction Steps

A mixture of 4-[4-(2-[2,2,2-trifluoroethyl]guanidino)pyrimid-2-ylthio]butyronitrile (0.14 g.) and concentrated H2SO4 was left at room temperature for 3 hours and then diluted with crushed ice and water. The solution was basified with 10 N aqueous NaOH and the mixture extracted three times with EtOAc. The combined extracts were dried and evaporated to dryness to give 4-[4-(2-[2,2,2-trifluoroethyl]guanidino)pyrimid-2-ylthio]butyramide (0.13 g.) which was characterised as the hydrogen maleate, m.p. 202°-203° on recrystallisation from aqueous EtOH.

Provenance & Evidence