反应详情

A mixture of 19.4 g. (0.1 mol.) of 2-phenylbenzofuran and 19.1 g. (0.1 mol.) of 4-acetoxy-3-methoxybenzonitrile in 20 ml. of trifluoroacetic acid is refluxed for three hours. The reaction mixture is cooled, diluted with 200 ml. of water and the resulting aqueous solution is extracted with ether. The extracts are concentrated to dryness and the residue is dissolved in 100 ml. of ethanol and heated with 20 ml. of 10% aqueous sodium carbonate for two hours. The mixture is concentrated, the residue extracted with ether and the extracts are dried and concentrated to give 3-(3-methoxy-4-hydroxybenzoyl)-2-phenylbenzofuran.

1. additionA mixture of 19.4 g
2. temperatureThe reaction mixture is cooled
3. additiondiluted with 200 ml
4. extractionof water and the resulting aqueous solution is extracted with ether
5. concentrationThe extracts are concentrated to dryness
6. dissolutionthe residue is dissolved in 100 ml
7. temperatureof ethanol and heated with 20 ml
8. concentrationThe mixture is concentrated
9. extractionthe residue extracted with ether
10. customthe extracts are dried
11. concentrationconcentrated