Hydrazine hydrate (1:1) → 4-[2-(2,2,2-Trifluoroethyl)guanidino]-2-(2-aminoethylthio)pyrimidine

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Reaction Steps

A mixture of 4-[2-(2,2,2-trifluoroethyl)guanidino]-2-(2-phthalimidoethylthio)pyrimidine (0.6 g.) ethanol (20 ml.) and 99% hydrazine hydrate (0.5 ml.) was heated under reflux for 1 hour and then evaporated to dryness. The residue was stirred with N hydrochloric acid and the mixture filtered. The filtrate was basified with 17N NaOH and the mixture extracted three times with ether. The combined ether extracts were dried and then evaporated to dryness to give 4-[2-(2,2,2-trifluoroethyl)guanidino]-2-(2-aminoethylthio)pyrimidine (0.25 g.) which was used without further purification.

Provenance & Evidence