反应详情

To C-Azido-C-(2-fluoro-4-bromo-phenyl)-methylamine (0.35 g, 1.43 mmol) was added triphenyl phospine (0.45 g, 1.72 mmol), 2N HCl (2 mL), and THF (2 mL). The reaction mixture was stirred at r.t. for 2 h and the reaction quenched with NaHCO3 (10 mL) and pH adjusted to 8, extracted with dichloromethane (2×30 mL) and washed with brine. The combined organic phases were dried over Na2SO4, filtered and evaporated yielding the crude product. Purification by chromatography (silica, EtOAc/Heptane, 1:1, followed by CH—2Cl2/MeOH 9:1 and with addition of a SCX colon) yielded 93 mg (30%) of 1-(2-Fluoro-4-bromo-phenyl)-ethylamine. 1H NMR δ (CDCl3): 1.44 (3H, d), 2.48 (2H, br s), 4.41 (1H, q), 7.19-7.40 (3H, m).

1. customthe reaction quenched with NaHCO3 (10 mL)
2. extractionextracted with dichloromethane (2×30 mL)
3. washwashed with brine
4. dry with materialThe combined organic phases were dried over Na2SO4
5. filtrationfiltered
6. customevaporated
7. customyielding the crude product
8. customPurification by chromatography (silica, EtOAc/Heptane, 1:1
9. additionwith addition of a SCX colon)