1-(1-(3-Methoxy-4-nitrophenyl)piperidin-4-yl)-4-methylpiperazine → 2-Methoxy-4-(4-(4-methylpiperazin-1-yl)piperidin-1-yl)aniline

HRID 2089034Notes

Reaction equation

[CH3:1][O:2][C:3]1[CH:4]=[C:5]([N:12]2[CH2:17][CH2:16][CH:15]([N:18]3[CH2:23][CH2:22][N:21]([CH3:24])[CH2:20][CH2:19]3)[CH2:14][CH2:13]2)[CH:6]=[CH:7][C:8]=1[N+:9]([O-])=O>CO.ClCCl.[Ni]>[CH3:1][O:2][C:3]1[CH:4]=[C:5]([N:12]2[CH2:17][CH2:16][CH:15]([N:18]3[CH2:19][CH2:20][N:21]([CH3:24])[CH2:22][CH2:23]3)[CH2:14][CH2:13]2)[CH:6]=[CH:7][C:8]=1[NH2:9]

Participants

Conditions

Temperature: 50 °C

Procedure

To a solution of Example 206a (6.88 g, 20.57 mmol) in a mixture of methanol (180 mL) and dichloromethane (20 mL) was added Raney nickel (50% in water, 3 g). This suspension was purged with hydrogen and stirred under hydrogen of 40 psi at 50° C. for 6 hours. Solid material was removed, and the filtrate was concentrated to provide the title product. Yield: 100%. MS (DCI) m/z 305 (M+H)+; 1H NMR (300 MHz, DMSO-d6): δ 1.47-1.59 (m, 2H), 1.84 (d, J=11.87 Hz, 2H), 2.33 (s, 3H), 2.44-2.71 (m, 12H), 3.28-3.48 (m, J=12.21 Hz, 4H), 3.73 (s, 2H), 6.29 (dd, J=8.31, 2.54 Hz, 1H), 6.46-6.54 (m, 2H).

Workup

customThis suspension was purged with hydrogen
customSolid material was removed
concentrationthe filtrate was concentrated

Sources & evidence

ORD record: ord-8432fbefe095459f82f023187853ea29
Source dataset: uspto-grants-2013_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08435980B2

Reaction notes

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