反应详情

5.1 g of 2,6-dimethyl-4-propionylphenol and 5.0 g of 4-methoxyphenylhydrazine hydrochloride were dispersed in 30 ml of isopropanol, and the dispersion was refluxed for 20 hours in a nitrogen stream. Water was added to the reaction mixture, and the precipitated crystals were collected by filtration. The crystals were dissolved in ethyl acetate, and washed with a 5% aqueous sodium hydroxide solution, water, 2N hydrochloric acid and water. The organic layer was dried, and the solvent was evaporated. Recrystallization of the resulting crude crystals from ethanol-hexane gave 5.8 g of 2-(4-hydroxy-3,5-dimethylphenyl)-5-methoxy-3-methylindole.

1. temperaturethe dispersion was refluxed for 20 hours in a nitrogen stream
2. filtrationthe precipitated crystals were collected by filtration
3. dissolutionThe crystals were dissolved in ethyl acetate
4. washwashed with a 5% aqueous sodium hydroxide solution, water, 2N hydrochloric acid and water
5. customThe organic layer was dried
6. customthe solvent was evaporated
7. customRecrystallization of the resulting crude crystals from ethanol-hexane