[CH3:1][O:2][C:3]1[C:8]([O:9][CH3:10])=[CH:7][C:6]([N+:11]([O-])=O)=[C:5]([C:14]2[CH2:19][C:18]([CH3:21])([CH3:20])[CH2:17][C:16]([CH3:23])([CH3:22])[CH:15]=2)[CH:4]=1.CO>[Pd].O1CCCC1>[CH3:1][O:2][C:3]1[C:8]([O:9][CH3:10])=[CH:7][C:6]([NH2:11])=[C:5]([CH:14]2[CH2:19][C:18]([CH3:21])([CH3:20])[CH2:17][C:16]([CH3:23])([CH3:22])[CH2:15]2)[CH:4]=1A mixture of 4,5-dimethoxy-1-nitro-2-(3,3,5,5-tetramethylcyclohex-1-enyl)benzene (1.0 g, 3.13 mmol) produced in Example (87b), 10% palladium on carbon (500 mg, wet), methanol (8 mL) and tetrahydrofuran (2 mL) was stirred for 13 hours at room temperature and atmospheric pressure under a hydrogen atmosphere. The mixture was filtered through Celite to remove the catalyst, and the filtrate was concentrated. A crude product of the title compound was obtained as a yellow oil. The crude product was used without purification for the following reaction.
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