反应详情

温度

120 °C

A stirred mixture of 4-cyano-2-fluorobenzaldehyde (2.23 g, 15 mmol), phenol (1.6 g, 17 mmol) and potassium carbonate (2.35 g, 17 mmol) in dried dimethylformamide (15 ml) was heated to 120° C. for 1 hour. After cooling, the mixture was diluted with water (50 ml) and extracted with diethyl ether (2×25 ml). The extracts were washed with 0.1M sodium hydroxide (2×50 ml), brine (50 ml), dried, filtered and evaporated to a yellow oil. Flash chromatography on silica, eluting with diethyl ether:hexane 1:1, gave 4-cyano-2-phenoxybenzaldehyde as a yellow oil that crystallised on standing.

1. temperatureAfter cooling
2. extractionextracted with diethyl ether (2×25 ml)
3. washThe extracts were washed with 0.1M sodium hydroxide (2×50 ml), brine (50 ml)
4. customdried
5. filtrationfiltered
6. customevaporated to a yellow oil
7. washFlash chromatography on silica, eluting with diethyl ether:hexane 1:1