1,1,1-Trifluoro-2-isothiocyanatoethane → 4-[3-(2,2,2-Trifluoroethyl)thioureido]-2-(4-phthalimidobutylthio)pyrimidine

Participants

Reaction Steps

A mixture of 4-amino-2-(4-phthalimidobutylthio)pyrimidine (0.49 g.), acetonitrile (5 ml.) and 2,2,2-trifluoroethylisothiocyanate (0.28 g.) was stirred at 70° for 48 hours. A further 0.28 g. of 2,2,2-trifluoroethylisothiocyanate was added and the mixture stirred at 70° for 48 hours. The reaction mixture was cooled and filtered, the residue stirred with N aqueous acetic acid and the undissolved solid collected to give 4-[3-(2,2,2-trifluoroethyl)thioureido]-2-(4-phthalimidobutylthio)pyrimidine (0.49 g.), m.p. 201°-202° after recrystallisation from a mixture of ethanol and dimethylformamide.

Provenance & Evidence