Methanol → 1-(2-Amino-5-(thiophen-2-yl)phenyl)-3-((1-methylpiperidin-4-yl)methyl)urea

HRID 62695Notes

Reaction equation

HRID 62695 reaction equation
[N+:1]([C:4]1[CH:9]=[CH:8][C:7]([C:10]2[S:11][CH:12]=[CH:13][CH:14]=2)=[CH:6][C:5]=1[NH:15][C:16]([NH:18][CH2:19][CH:20]1[CH2:25][CH2:24][NH:23][CH2:22][CH2:21]1)=[O:17])([O-])=O.[CH3:26]O>[Pd]>[NH2:1][C:4]1[CH:9]=[CH:8][C:7]([C:10]2[S:11][CH:12]=[CH:13][CH:14]=2)=[CH:6][C:5]=1[NH:15][C:16]([NH:18][CH2:19][CH:20]1[CH2:25][CH2:24][N:23]([CH3:26])[CH2:22][CH2:21]1)=[O:17]

Participants

4

Reactant 2

HCID 887MethanolHCID 709815901-(2-Nitro-5-(thiophen-2-yl)phenyl)-3-(piperidin-4-ylmethyl)urea

Product 1

HCID 867125341-(2-Amino-5-(thiophen-2-yl)phenyl)-3-((1-methylpiperidin-4-yl)methyl)ureaYield 67%

Reagents, catalysts & solvents 1

HCID 23938PalladiumCatalyst

Procedure

To a solution of 1-(2-nitro-5-(thiophen-2-yl)phenyl)-3-(piperidin-4-ylmethyl)urea (0.045 g, 0.12 mmol, 1.0 equiv.) in methanol was added Pd/C (0.02 g, 0.02 mmol, 0.16 equiv.). The reaction mixture was stirred at room temperature under H2 balloon pressure for 1 h. The reaction was filtered through celite and concentrated under reduced pressure. The crude solid was washed with ether to obtain of pure 1-(2-Amino-5-(thiophen-2-yl)phenyl)-3-((1-methylpiperidin-4-yl)methyl)urea (0.03 g, 67% yield). ESI+ MS: m/z 345 ([M]+). 1H NMR (500 MHz, d6-DMSO): δ 7.66 (d, J=1.5 Hz, 1H), 7.56 (s, 1H), 7.33 (d, J=5.0 Hz, 1H), 7.17 (d, J=3.0 Hz, 1H), 7.10 (dd, J=3.5 Hz, 1H), 7.03 (t, J=4.0 Hz, 1H), 6.71 (d, J=7.5 Hz, 1H), 6.27 (t, J=5.5 Hz, 1H), 4.88 (bs, 2H), 2.98 (t, J=5.5 Hz, 2H), 2.77 (d, J=11.0 Hz, 2H), 2.16 (s, 3H), 1.85 (m, 2H), 1.63 (d, J=4.5 Hz, 2H), 1.36-1.33 (m, 1H), 1.20-1.13 (m, 3H).

Workup

  1. filtrationThe reaction was filtered through celite and
  2. concentrationconcentrated under reduced pressure
  3. washThe crude solid was washed with ether

Sources & evidence

ORD record
ord-9cc11d88c2a94dd881b68cfe7f69e0ee
Source dataset
uspto-grants-2016_09
Patent number
US09447030B2

Reaction notes

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