(2-Nitrophenyl)hydrazine → 3-Chloro-5-(trifluoromethyl)-2-pyridinecarbaldehyde 2-(2-nitrophenyl)hydrazone
反応式
[Cl:1][C:2]1[C:3]([CH:12]=O)=[N:4][CH:5]=[C:6]([C:8]([F:11])([F:10])[F:9])[CH:7]=1.[N+:14]([C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][C:18]=1[NH:23][NH2:24])([O-:16])=[O:15]>C(O)C>[N+:14]([C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][C:18]=1[NH:23][N:24]=[CH:12][C:3]1[C:2]([Cl:1])=[CH:7][C:6]([C:8]([F:11])([F:10])[F:9])=[CH:5][N:4]=1)([O-:16])=[O:15]参加物
4
実験手順
A mixture of 3-chloro-5-(trifluoromethyl)pyridine-2-carboxaldehyde (1.05 g) and 2-nitrophenylhydrazine (0.76 g) in ethanol (75 ml) was heated at reflux for 2.5 hours and then allowed to cool to room temperature overnight. The resulting orange solid was isolated by filtration and recrystallised (petrol) to afford the title compound as admixture of isomers, m.p. 127-35° C.