[Br:1][C:2]1[N:7]=[C:6]([CH3:8])[CH:5]=[CH:4][N:3]=1.C1C(=O)N([Br:16])C(=O)C1.C(OOC(=O)C1C=CC=CC=1)(=O)C1C=CC=CC=1>C(Cl)(Cl)(Cl)Cl>[Br:1][C:2]1[N:7]=[C:6]([CH2:8][Br:16])[CH:5]=[CH:4][N:3]=1To a stirred solution of 2-bromo-4-methylpyrimidine (1.5 g, 8.67 mmol) in CCl4 (15 mL) was added NBS (3.39 g, 19.07 mmol) and benzoyl peroxide (0.476 g, 1.907 mmol) then it was heated to 80° C. After 48 hours, the reaction mixture was cooled to ambient temperature and filtered. The black solid was discarded and liquid was concentrated to brown solid which was purified by column chromatography (10% EtOAc/Hex) to obtained a yellow solid of 2-bromo-4-(bromomethyl)pyrimidine (437.6 mg, 1.737 mmol, 20.04% yield). 1H NMR (500 MHz, DMSO-d6) δ 8.74 (d, J=4.9 Hz, 1H), 7.75 (d, J=4.9 Hz, 1H), 4.66 (s, 2H)), Mass spec.: 252.9 (MH)+.
Wird geladen…
