反应详情

To a suspension of sodium hydride (800 mg, 60% oil dispersion) in DMF (20 ml) was added a solution of 6-Bromo-2-naphthol dropwise with stirring at 0°. After gas evolution had ceased, neat ethyl iodide (1.6 ml) was added dropwise to the stirred solution. The reaction was stirred overnight at rt. The reaction mixture was poured into water and extracted several times with tert-butyl methyl ether. The combined organic extracts were washed with water and brine, then dried over MgSO4, filtered and evaporated under reduced pressure to give tan solid. This was recrystallized from MeOH and dried under high vacuum to a constant wt. giving a white solid (3.11 g, 60%). 1H NMR(400 MHz, CDCl3) δ 7.92 (d, J=1.7 Hz, 1H), 7.65(d, J=8.9 Hz, 1H), 7.59 (d, J=8.7 Hz, 2H), 7.16 (dd, J=8.9 Hz, 2.48, 1H), 7.09 (d, J=2.4 Hz, 1H), 4.15 (q, 2H), 1.49 (t, 3H).

1. stirringThe reaction was stirred overnight at rt
2. extractionextracted several times with tert-butyl methyl ether
3. washThe combined organic extracts were washed with water and brine
4. dry with materialdried over MgSO4
5. filtrationfiltered
6. customevaporated under reduced pressure
7. customto give tan solid
8. customThis was recrystallized from MeOH
9. customdried under high vacuum to a constant wt.