反应详情

1-[2-(4-Benzyloxyphenylamino)-5-methoxyphenyl]ethanone (9 g, 0.0258 mole) in 810 ml of ethanol and 90 ml of acetic acid was hydrogenated in a Parr apparatus in the presence of 900 mg of 10% palladium-on-carbon catalyst. After the required amount of hydrogen had been consumed, the reaction mixture was filtered and the solvents removed in vacuo. The residue was partitioned between ether and 10% aqueous sodium bicarbonate. The ether extracts were dried (MgSO4), the solvent removed, and the residue chromatographed on silica gel using chloroform as the eluant. There was obtained 5.33 g of 1-[2-(4-hydroxyphenylamino)-5-methoxyphenyl]ethanone, orange solid, m.p. 118°-119° C.

1. customAfter the required amount of hydrogen had been consumed
2. filtrationthe reaction mixture was filtered
3. customthe solvents removed in vacuo
4. customThe residue was partitioned between ether and 10% aqueous sodium bicarbonate
5. dry with materialThe ether extracts were dried (MgSO4)
6. customthe solvent removed
7. customthe residue chromatographed on silica gel