反应详情

A solution of resorcinol (40 g, 0.4 mol) and allyl bromide (32 g, 0.26 mol) in acetone (500 ml) containing potassium carbonate (55 g, 0.4 mol) was heated, with stirring, under reflux for 10 hours. The mixture was filtered, and the filtrate was evaporated to dryness. The residue was purified by means of PrepPak 500/silica on a Waters Associates Prep LC/System 500 at 250 ml/min using hexane-ethyl acetate (8:1, v/v) as a liquid phase. 3-Allyloxyphenol was isolated as a colorless oil (20 g, 51% based on ally bromide); NMR (chloroform-d): δ4.78 (s, OH), 4.55 (d, J=5.5 Hz, CH2CH=CH2), 5.29-5.50 (m, CH2CH=CH2), 6.07 (m, CH2CH=CH2), 7.18 (t, J=8.5 Hz, H-5), 6.46-6.58 (m, remaining Ar--H).

1. temperaturewas heated
2. temperatureunder reflux for 10 hours
3. filtrationThe mixture was filtered
4. customthe filtrate was evaporated to dryness
5. customThe residue was purified by means of PrepPak 500/silica on a Waters Associates Prep LC/System 500 at 250 ml/min