Hydrazine hydrate (1:1) → 1-Amino-3-(2,2,2-trifluoroethyl)-1,3-diazinan-2-one

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Reaction Conditions

Reaction Steps

Into a 100-mL round-bottom flask, was placed phenyl N-(3-chloropropyl)-N-(2,2,2-trifluoroethyl)carbamate (1.4 g, 4.73 mmol, 1.00 equiv), NH2NH2.H2O (6 mL), ethanol (40 mL). The resulting solution was stirred for 5 h at 90° C. in an oil bath. The resulting mixture was concentrated under vacuum. The resulting solution was diluted with 50 mL of H2O. The resulting solution was extracted with 3×30 mL of ethyl acetate and the organic layers combined. The resulting mixture was washed with 2×30 mL of brine. The mixture was dried over anhydrous sodium sulfate. The resulting mixture was concentrated under vacuum. This resulted in 200 mg (crude) of 1-amino-3-(2,2,2-trifluoroethyl)-1,3-diazinan-2-one as a light yellow solid.

Provenance & Evidence