反应详情

温度

140 °C

Pd(PPh3)2Cl2 (840 mg, 1.2 mmol) and sodium acetate (200 mg, 2.4 mmol) were added to a solution of 6,7-dimethoxy-3,4-dihydronaphthalene (2, 700 mg, 3.7 mmol) and 1-iodo-2-nitrobenzene (925 mg, 3.7 mmol) in dimethylacetamide (50 mL). The mixture was stirred under nitrogen at 140° C. overnight, and then concentrated in vacuo. Ethyl acetate (60 mL) was added to the residue and washed with distilled water (50 mL). The organic layer was separated and passed through a celite bed. The organic layer was then washed with brine, dried (anhydrous Na2SO4) and concentrated in vacuo. The residue was chromatographed to give compound 3 (330 mg) in 29% yield; 1H NMR (CDCl3) d 2.51(2H, t, J=8.1), 2.92(2H, t, J=8.1), 3.87(3H, s), 3.90(3H, s), 6.45(1H, s), 6.67(1H, s), 6.73(1H, s), 7.38˜7.45 (2H, m), 7.54˜7.62(1H, m), 7.88˜7.93(1H, m); 13C NMR d 28.5, 28.5, 56.6, 111.0, 111.7, 124.9, 127.0, 127.1, 128.1, 128:3, 131.3, 133.3, 135.7, 138.7, 147.9, 148.9.

1. concentrationconcentrated in vacuo
2. additionEthyl acetate (60 mL) was added to the residue
3. washwashed with distilled water (50 mL)
4. customThe organic layer was separated
5. washThe organic layer was then washed with brine
6. dry with materialdried (anhydrous Na2SO4)
7. concentrationconcentrated in vacuo
8. customThe residue was chromatographed