Phenyl N-hydroxycarbamate → 4-[(3,5-Dimethyl-pyridin-2-ylmethyl)-(1-pyridin-2-yl-ethyl)-amino]-piperidine-1-carboxylic acid hydroxyamide

HRID 251119Notes

Reaction equation

HRID 251119 reaction equation
[CH3:1][C:2]1[C:3]([CH2:9][N:10]([CH:19]2[CH2:24][CH2:23][NH:22][CH2:21][CH2:20]2)[CH:11]([C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][N:14]=2)[CH3:12])=[N:4][CH:5]=[C:6]([CH3:8])[CH:7]=1.[O:25]([C:32]([NH:34][OH:35])=O)C1C=CC=CC=1>C1COCC1>[OH:35][NH:34][C:32]([N:22]1[CH2:21][CH2:20][CH:19]([N:10]([CH2:9][C:3]2[C:2]([CH3:1])=[CH:7][C:6]([CH3:8])=[CH:5][N:4]=2)[CH:11]([C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][N:14]=2)[CH3:12])[CH2:24][CH2:23]1)=[O:25]

Participants

4

Reactant 2

HCID 148233Phenyl N-hydroxycarbamateHCID 67271817(3,5-Dimethyl-pyridin-2-ylmethyl)-piperidin-4-yl-(1-pyridin-2-yl-ethyl)-amine

Product 1

HCID 589970584-[(3,5-Dimethyl-pyridin-2-ylmethyl)-(1-pyridin-2-yl-ethyl)-amino]-piperidine-1-carboxylic acid hydroxyamideYield 38%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of (3,5-Dimethyl-pyridin-2-ylmethyl)-piperidin-4-yl-(1-pyridin-2-yl-ethyl)-amine (0.124 g, 0.38 mmol) in dry THF (4 mL) was added N-(phenoxycarbonyl)hydroxylamine (Stewart, A. O. et al. J. Org. Chem. 1992, 57, 5020-5023) (0.116 g, 0.76 mmol) and the resultant solution was stirred at 60° C. overnight. The mixture was cooled to room temperature and concentrated. Purification of the crude material by radial chromatography on silica gel (1 mm plate, 15:1:1 CH2Cl2-MeOH—NH4OH) provided 59 mg (38%) of COMPOUND 261 as a white solid. 1H NMR (CDCl3) δ 0.97-1.02 (m, 1H), 1.39-1.47 (m, 3H), 1.61-1.67 (m, 3H), 1.83-1.86 (m, 1H), 2.27 (s, 3H), 2.28 (s, 3H), 2.53-2.61 (m, 1H), 2.71-2.80 (m, 1H), 2.92-3.00 (m, 1H), 3.79-3.99 (m, 4H), 6.48-6.85 (m, 2H), 7.11-7.15 (m, 1H), 7.23 (br s, 1H), 7.34-7.40 (m, 1H), 7.58-7.63 (m, 1H), 8.19 (br s, 1H), 8.51 (d, 1H, J=3.9 Hz); 13C NMR (CDCl3) δ 16.42, 18.31, 18.68, 30.14, 30.52, 44.12, 44.18, 51.88, 55.29, 58.52, 122.25, 123.99, 132.19, 133.15, 136.48, 139.60, 146.63, 148.84, 155.08, 161.12, 162.90; ES-MS m/z 384 (M+H). Anal. Calcd. For C21H29N5O2.0.1CH2Cl2.1.0H2O: C, 61.81; H, 7.67; N, 17.08. Found: C, 62.17; H, 7.33; N, 16.74.

Workup

  1. concentrationconcentrated
  2. customPurification of the crude material by radial chromatography on silica gel (1 mm plate, 15:1:1 CH2Cl2-MeOH—NH4OH)

Sources & evidence

ORD record
ord-bb337eab65d848c6a4d25fe1f26bcaa6
Source dataset
uspto-grants-2011_01
Patent number
US07863293B2

Reaction notes

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