2-Amino-4'-chlorobenzophenone → (4-Chlorophenyl){2-[(3-nitropyridin-2-yl)amino]phenyl}methanone
反応式
[NH2:1][C:2]1[CH:16]=[CH:15][CH:14]=[CH:13][C:3]=1[C:4]([C:6]1[CH:11]=[CH:10][C:9]([Cl:12])=[CH:8][CH:7]=1)=[O:5].Cl[C:18]1[C:23]([N+:24]([O-:26])=[O:25])=[CH:22][CH:21]=[CH:20][N:19]=1>C1(C)C=CC=CC=1>[Cl:12][C:9]1[CH:10]=[CH:11][C:6]([C:4]([C:3]2[CH:13]=[CH:14][CH:15]=[CH:16][C:2]=2[NH:1][C:18]2[C:23]([N+:24]([O-:26])=[O:25])=[CH:22][CH:21]=[CH:20][N:19]=2)=[O:5])=[CH:7][CH:8]=1参加物
4
反応条件
- 温度
- 120 °C
実験手順
Under nitrogen atmosphere, 50.0 g (0.216 mole) of 2-amino-4'-chlorobenzophenone was added in four portions at 15 min intervals to a stirred melt (105°-110° C.) of 35.9 g (0.227 mole) of 2-chloro-3-nitropyridine. The reaction temperature was increased to 120° C. for 3 hr and then to 150° C. for 2 hr. The stirred mixture was cooled to 115° C. and 100 ml of hot toluene was added. The cooled mixture (room temperature) was filtered. The filtrate was washed with 75 ml of 5% sodium hydroxide solution, 50 ml of water and 30 ml of saturated sodium chloride solution, dried over sodium sulfate and concentrated in vacuo. The residue was crystallized from ethyl acetate-isopropyl ether to give 43 g (56.4%) solid. Recrystallization from ethyl acetate-isopropyl ether gave 18.26 g* of bright-yellow solid, m.p. 138'-140° C.