2,2,2-Trifluoroethylhydrazine → HCID 22493388、化合物

反応式

C[N:2]([CH:4]=[N:5][C:6](=O)[C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][C:8]=1[N+:13]([O-:15])=[O:14])C.[F:17][C:18]([F:23])([F:22])[CH2:19][NH:20]N>C(O)(=O)C.C(O)CCC>[F:17][C:18]([F:23])([F:22])[CH2:19][N:20]1[C:6]([C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][C:8]=2[N+:13]([O-:15])=[O:14])=[N:5][CH:4]=[N:2]1

参加物

実験手順

N-[(Dimethylamino)methylene]-2-nitrobenzamide (1.0 g, 4.5 mmol) in acetic acid (25 mL) and n-butanol (15 mL) was treated with 70% aqueous 1,1,1-trifluoroethylhydrazine (1 mL, 11.3 mmol), and heated to reflux for 2 hours, at which time the volume was reduced by ˜25 mL by distillation. The remaining solvent was removed in vacuo, and the residue chromatographed on silica eluting with 3:1-1:1 hexane:ethyl acetate to afford 1-(2,2,2-trifluoroethyl)-5-(2-nitrophenyl)-1,2,4-triazole, which was reduced as in Example 64 to give crude 1-(2,2,2-trifluoroethyl)-5-(2-aminophenyl)-1,2,4-triazole (430 mg).