反应详情

温度

110 °C

A mixture of 4-formyl-2-methoxy-5-methylphenyl trifluoromethanesulfonate (35.0 g, 117 mmol), zinc cyanide (55.1 g, 469 mmol) and tetrakis triphenylphosphine palladium (0) (20.34 g, 17.60 mmol) in DMF (300 mL) were stirred at 110° C. under nitrogen atmosphere for 8 hr. EtOAc was added to the reaction mixture and the organic layer was washed two times with water, dried, filtered and concentrated. The crude product was then purified by column chromatography (silica gel, ethylacetate/hexanes 3:7) which afforded 4-formyl-2-methoxy-5-methylbenzonitrile. 1H NMR (CDCl3, 500 MHz) δ 10.39 (s, 1H), 7.47 (s, 1H), 7.44 (s, 1H), 4.02 (s, 3H), 2.66 (s, 3H); LC/MS: (IE, m/z) [M+1]+=176.06; tR=2.71 min.

1. washthe organic layer was washed two times with water
2. customdried
3. filtrationfiltered
4. concentrationconcentrated
5. customThe crude product was then purified by column chromatography (silica gel, ethylacetate/hexanes 3:7) which