反应详情

2,2,2-Trifluoroethylisothiocyanate (3.4 g.) was added to a solution of 3-amino-1-(2-cyanoethyl)pyrazole (2.72 g.) in acetonitrile (10 ml.) and the solution left at room temperature for 18 hours. The mixture was evaporated to dryness and the residue recrystallised from ethanol to give 3-[3-(2,2,2-trifluoroethyl)thioureido]-1-(2-cyanoethyl)pyrazole, m.p. 164°-165°.

1. customThe mixture was evaporated to dryness
2. customthe residue recrystallised from ethanol