[N+:1]([C:4]1[CH:18]=[CH:17][C:7]([N:8]([CH2:13][CH2:14][CH2:15][CH3:16])[CH2:9][CH2:10][CH2:11][CH3:12])=[CH:6][CH:5]=1)([O-])=O>CO.[Pd]>[CH2:9]([N:8]([CH2:13][CH2:14][CH2:15][CH3:16])[C:7]1[CH:6]=[CH:5][C:4]([NH2:1])=[CH:18][CH:17]=1)[CH2:10][CH2:11][CH3:12]To a solution of 4-nitro-N,N-dibutylaniline from Example 40A (1.0 g, 4.0 mmol) in methanol (10 ml) was added palladium 10 wt % on activated carbon (85 mg, 0.08 mmol) under an atmosphere of hydrogen. The reaction mixture was stirred at room temperature for 4 hours and filtered through celite. After solvent were removed under reduced pressure, the titled material was obtained as a white solid, which was used in next step without purification.
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