Ammonia → 3-[2-(2,2,2-Trifluoroethyl)guanidino]-1-(2-cyanoethyl)pyrazole
反応式
[F:1][C:2]([F:18])([F:17])[CH2:3][NH:4][C:5](=S)[NH:6][C:7]1[CH:11]=[CH:10][N:9]([CH2:12][CH2:13][C:14]#[N:15])[N:8]=1.[NH3:19]>CO>[F:1][C:2]([F:18])([F:17])[CH2:3][N:4]=[C:5]([NH2:19])[NH:6][C:7]1[CH:11]=[CH:10][N:9]([CH2:12][CH2:13][C:14]#[N:15])[N:8]=1参加物
4
実験手順
A mixture of 3-[3-(2,2,2-trifluoroethyl)thioureido]-1-(2-cyanoethyl)pyrazole (2.8 g.), yellow mercuric oxide (4.0 g.), methanol (100 ml.) and saturated ethanolic ammonia solution (10 ml.) was stirred at room temperature for 2 hours and then filtered. The filtrate was evaporated to dryness and the residue partitioned between ether and water. The ether phase was dried and evaporated to give 3-[2-(2,2,2-trifluoroethyl)guanidino]-1-(2-cyanoethyl)pyrazole characterised as the hydrogen maleate, m.p. 141°-142° after recrystallisation from acetone.