p-Toluenesulfonic acid monohydrate → 1-benzyl-6-bromo-1H-benzo[d]imidazole
反応式
[CH2:1]([NH:8][C:9]1[C:10]([NH2:16])=[CH:11][CH:12]=[C:13]([Br:15])[CH:14]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH3:17]C1C=CC(S(O)(=O)=O)=CC=1.O>C(OC)(OC)OC>[CH2:1]([N:8]1[C:9]2[CH:14]=[C:13]([Br:15])[CH:12]=[CH:11][C:10]=2[N:16]=[CH:17]1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1参加物
4
反応条件
- 温度
- 100 °C
実験手順
To a solution of N1-benzyl-5-bromobenzene-1,2-diamine (450 mg, 1.63 mmol) in HC(OMe)3 (15 mL) was added TsOH.H2O (30 mg, 0.16 mmol). The mixture was stirred at 100° C. for 4 h. The reaction solution was concentrated, and the residue was washed with water and extracted with EtOAc. The organic layer was concentrated to give the crude 1-benzyl-6-bromo-1H-benzo[d]imidazole. The crude product was used in next step without further purification. LCMS (m/z): 287.1/288.1 [M+H]+/[M+2H]+