[C:1]([C:5]1[CH:6]=[C:7]([C:15](=[O:17])[CH3:16])[CH:8]=[C:9]([N+:12]([O-])=O)[C:10]=1[OH:11])([CH3:4])([CH3:3])[CH3:2].C(OCC)(=O)C.CCCCCC>C(OCC)(=O)C.[C].[Pd]>[NH2:12][C:9]1[CH:8]=[C:7]([C:15](=[O:17])[CH3:16])[CH:6]=[C:5]([C:1]([CH3:2])([CH3:4])[CH3:3])[C:10]=1[OH:11]After adding 10% palladium-carbon (50% wet) (100 mg) to a solution of 1-[3-(tert-butyl)-4-hydroxy-5-nitrophenyl]-1-ethanone (1.00 g, 4.22 mmol) in ethyl acetate (10 ml) at room temperature, the mixture was hydrogenated for 3 hours under normal pressure. The 10% palladium-carbon was then filtered through celite and the solvent was distilled off under reduced pressure. The residue was subjected to silica gel chromatography (Wakogel-C200,10 g) to yield the title compound (627 mg, 71.8% yield) as a light red powder from the ethyl acetate-hexane (1:4˜1:3) fraction.
Wird geladen…
