反应详情

To a solution of 2-bromo-1-fluoro-3-nitrobenzene (1.0 g, 5.0 mmol) in CH3OH (50 L) was added NiCl2 (2.2 g 10 mmol) and NaBH4 (0.50 g 14 mmol) at 0° C. After the addition, the mixture was stirred for 5 min. Water (20 mL) was added and the mixture was extracted with EtOAc (20 mL×3). The organic layers were dried over anhydrous Na2SO4 and evaporated under vacuum to give 2-bromo-3-fluoroaniline (600 mg, 70%). 1H NMR (400 MHz, CDCl3) δ 7.07-7.02 (m, 1H), 6.55-6.49 (m, 1H), 4.22 (br s, 2H).

1. additionAfter the addition
2. extractionthe mixture was extracted with EtOAc (20 mL×3)
3. dry with materialThe organic layers were dried over anhydrous Na2SO4
4. customevaporated under vacuum