Bromine → 6-Bromo-2,4-dimethylpyridin-3-amine
Reaktionsgleichung
[CH3:1][C:2]1[C:7]([NH2:8])=[C:6]([CH3:9])[CH:5]=[CH:4][N:3]=1.[Br:10]Br>C(Cl)Cl>[Br:10][C:4]1[N:3]=[C:2]([CH3:1])[C:7]([NH2:8])=[C:6]([CH3:9])[CH:5]=1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
To a solution of 2,4-dimethylpyridin-3-amine (2.0 g, 16 mmol) in CH2Cl2 (20 mL), was added a solution of bromine (3.16 g; 20 mmol) in CH2Cl2 (5 mL) at 0° C. for 5 min. The reaction was concentrated under vacuum. The reaction was poured into H2O (50 mL), extracted with CH2Cl2, washed with Na2SO3 solution, and dried over MgSO4. The CH2Cl2 was concentrated under vacuum to afford the crude compound. The crude was purified over SiO2 to afford to give 6-bromo-2,4-dimethylpyridin-3-amine. 1HNMR (CDCl3, 400 MHz) δ 2.10 (s, 3H), 2.31 (s, 3H), 4.85-5.10 (b, 2H), 7.05 (s, 1H). Exact mass calculated for C7H9BrN2 201.06. found 202.3 (MH+).