反应详情

Methyl 4-chloro-3′-methylbiphenyl-3-carboxylate (1.77 g, 6.5 mmol) and NBS (1.27 g, 7.19 mmol) were dissolved in CCl4 (20 mL), a catalytic amount of AIBN was added and the mixture was heated at reflux overnight. The reaction mixture was filtered, the solvent was removed in vacuo and the residue was purified using automated medium pressure silica gel chromatography (ISCO) eluting with 20% ethyl acetate/hexane to obtain methyl 3′-(bromo-methyl)-4-chlorobiphenyl-3-carboxylate (2.10 g, 91%) as a pale brown solid. 1H NMR (300 MHz, CDCl3): δ 8.07 (s, 1H), 7.68-7.45 (m, 6H), 4.58 (s, 2H), 4.00 (s, 3H).

1. temperaturethe mixture was heated
2. temperatureat reflux overnight
3. filtrationThe reaction mixture was filtered
4. customthe solvent was removed in vacuo
5. customthe residue was purified
6. washeluting with 20% ethyl acetate/hexane