反应详情

To a solution of 8-hydroxynaphthalene-1-(N,N-dimethyl)carboxamide (100 mg, 0.46 mmol) in dry DMF (4 mL) was added sodium hydride (12 mg, 0.51 mmol, 1.1 eq). The sodium hydride was added as 20 mg of a 60% dispersion in mineral oil that had been previously washed with 3×heptane portions under an inert atmosphere. The mixture was stirred for 30 minutes at room temperature, and 4-chloromethylstilbene (117 mg, 0.51 mmol, 1.1 eq) was added. The resulting mixture was stirred at room temperature overnight. The reaction mixture was poured onto ice/water (100 mL) and the aqueous-DMF layer was extracted into ethyl acetate portions. The combined organic layers were washed (brine), dried (MgSO4), filtered and concentrated in vacuo. The crude product was purified by column chromatography (silica gel, eluant:ethyl acetate/heptane mixtures) to give the desired ether (yield: 108 mg, 0.27 mmol, 58%);

1. washhad been previously washed with 3×heptane portions under an inert atmosphere
2. stirringThe resulting mixture was stirred at room temperature overnight
3. additionThe reaction mixture was poured onto ice/water (100 mL)
4. extractionthe aqueous-DMF layer was extracted into ethyl acetate portions
5. washThe combined organic layers were washed (brine)
6. dry with materialdried (MgSO4)
7. filtrationfiltered
8. concentrationconcentrated in vacuo
9. customThe crude product was purified by column chromatography (silica gel, eluant:ethyl acetate/heptane mixtures)