反应详情

A round-bottomed flask was charged with 4-{[3-methyl-6-(methyloxy)-2-phenyl-1-naphthalenyl]oxy}phenol (233) (0.150 g, 0.421 mmol), K2CO3 (0.116 g, 0.842 mol), acetone, and ethylbromoacetate (0.105 g, 0.632 mmol) under N2. The reaction mixture was refluxed for 5 h and cooled at room temperature. Reaction mixture was filtered and concentrated under reduced pressure to afford the crude product. The product was purified by SiO2 column chromatography using hexanes:EtOAc (19:1 to 9:1) as an eluent to give 0.177 g (95%) of the title compound (234) as a white foam. 1H NMR (400 MHz, CDCl3): δ 7.80 (d, J=9.2 Hz, 1H), 7.54 (s, 1H), 7.29-7.22 (m, 3H), 7.13-7.11 (m, 3H), 7.05 and 7.03 (dd, J1=9.2 Hz, J2=2.4 Hz, 1H), 6.63 (d, J1=9.2 Hz, 2H), 6.50 (d, J1=9.2 m, 2H), 4.48 (s, 2H), 4.24 (q, J=3.8 Hz, 2H), 3.93 (s, 3H), 2.23 (s, 3H), 1.27 (t, J=3.00 Hz, 3H).

1. temperatureThe reaction mixture was refluxed for 5 h
2. customReaction mixture
3. filtrationwas filtered
4. concentrationconcentrated under reduced pressure
5. customto afford the crude product
6. customThe product was purified by SiO2 column chromatography