Hydrogen Bromide → 6-[bromo(4-chlorophenyl)methyl]-1-methyl-1H-benzotriazole monohydrobromide
反応式
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]([C:10]2[CH:11]=[CH:12][C:13]3[N:17]=[N:16][N:15]([CH3:18])[C:14]=3[CH:19]=2)O)=[CH:4][CH:3]=1.[BrH:20]>C(O)(=O)C>[BrH:20].[Br:20][CH:8]([C:5]1[CH:6]=[CH:7][C:2]([Cl:1])=[CH:3][CH:4]=1)[C:10]1[CH:11]=[CH:12][C:13]2[N:17]=[N:16][N:15]([CH3:18])[C:14]=2[CH:19]=1参加物
4
反応条件
- 温度
- 40 °C
実験手順
A mixture of 245 parts of α-(4-chlorophenyl)-1-methyl-1H-benzotriazole-6-methanol and 1500 parts of a hydrobromic acid solution in acetic acid was stirred for 2.5 hours at 40° C. The reaction mixture was evaporated at 60° C. and the residue was stirred in dichloromethane. After cooling to 10° C., the precipitated product was filtered off and dried, yielding 285 parts (76.6%) of 6-[bromo(4-chlorophenyl)methyl]-1-methyl-1H-benzotriazole monohydrobromide (int. 130).