反应详情

To a stirred solution of 4-(2-hydroxyethyl)morpholine (1.7 g, 12.96 mmol) in DMF (2 mL) was added NaH (0.52 g, 60% dispersion in oil, 12.96 mmol). The reaction mixture was stirred at r.t. for 10 minutes, then cooled to 0° C. A solution of 2-fluoronitrobenzene (1.5 g, 10.63 mmol) in DMF (2 mL) was added over 5 min. The reaction mixture was allowed to warm to r.t., then was stirred for 2 h before the addition of 2M aqueous HCl (50 mL). The aqueous fraction was separated, neutralised with aqueous sat. NaHCO3 and extracted with EtOAc (2×50 mL). The combined organic fractions were dried (Na2SO4), filtered and concentrated in vacuo to give the title compound (2.4 g, 90%) as a yellow oil that was used without further purification. LCMS (ES+) 253.0 (M+H)+, RT 2.06 minutes (Method 5).

1. temperaturecooled to 0° C
2. temperatureto warm to r.t.
3. customThe aqueous fraction was separated
4. extractionextracted with EtOAc (2×50 mL)
5. dry with materialThe combined organic fractions were dried (Na2SO4)
6. filtrationfiltered
7. concentrationconcentrated in vacuo