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

HRID 251140Notes

Reaction equation

HRID 251140 reaction equation
[CH3:1][C:2]1[C:3]([CH2:9][N:10]([CH2:17][C:18]2[C:27]3[C:22](=[CH:23][CH:24]=[CH:25][CH:26]=3)[CH:21]=[CH:20][N:19]=2)[CH:11]2[CH2:16][CH2:15][NH:14][CH2:13][CH2:12]2)=[N:4][CH:5]=[C:6]([CH3:8])[CH:7]=1.[O:28]([C:35]([NH:37][OH:38])=O)C1C=CC=CC=1>C1COCC1>[OH:38][NH:37][C:35]([N:14]1[CH2:15][CH2:16][CH:11]([N:10]([CH2:9][C:3]2[C:2]([CH3:1])=[CH:7][C:6]([CH3:8])=[CH:5][N:4]=2)[CH2:17][C:18]2[C:27]3[C:22](=[CH:23][CH:24]=[CH:25][CH:26]=3)[CH:21]=[CH:20][N:19]=2)[CH2:12][CH2:13]1)=[O:28]

Participants

4

Reactant 2

HCID 148233Phenyl N-hydroxycarbamateHCID 67271521(3,5-Dimethyl-pyridin-2-ylmethyl)-isoquinolin-1-ylmethyl-piperidin-4-yl-amine

Product 1

HCID 589971804-[(3,5-Dimethyl-pyridin-2-ylmethyl)-isoquinolin-1-ylmethyl-amino]-piperidine-1-carboxylic acid hydroxyamideYield 62.7%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of (3,5-dimethyl-pyridin-2-ylmethyl)-isoquinolin-1-ylmethyl-piperidin-4-yl-amine (118 mg, 0.327 mmol) in anhydrous THF (3.5 mL) was added N-(phenoxycarbonyl)hydroxylamine (57.5 mg, 0.344 mmol). The mixture was warmed to reflux and stirred for 17 h, then cooled to ambient temperature and concentrated to a yellow solid. Purification by column chromatography on silica gel (eluted with CH2Cl2/MeOH/NH4OH) follow by purification by radial chromatography (eluted with CH2Cl2/MeOH/NH4OH 94:5:1) afforded 4-[(3,5-Dimethyl-pyridin-2-ylmethyl)-isoquinolin-1-ylmethyl-amino]-piperidine-1-carboxylic acid hydroxyamide (86 mg, 61%) as a yellow solid. 1H NMR (CDCl3) δ 1.69-1.79 (m, 2H), 1.96 (d, 1H, J=11.1 Hz), 2.04 (s, 3H), 2.27 (s, 3H), 2.63-2.77 (m, 3H), 3.85 (s, 2H), 4.05 (d, 2H, J=12.7 Hz), 4.25 (s, 2H), 6.88 (s, 1H), 7.22 (s, 1H), 7.35 (t, 1H, J=7.7 Hz), 7.54 (d, 1H, J=5.9 Hz), 7.59 (t, 1H, J=7.5 Hz), 7.75 (d, 1H, J=8.1 Hz), 7.87 (d, 1H, J=8.5 Hz), 8.18 (s, 1H), 8.39 (d, 1H, J=5.7 Hz); 13C NMR (CDCl3) δ 17.9, 18.1, 26.9, 43.8, 53.4, 54.6, 57.7, 120.6, 126.3, 126.9, 127.7, 129.8, 132.0, 132.9, 136.3, 138.9, 141.3, 146.4, 153.8, 158.9, 160.7; ES-MS m/z 420 (M+H). Anal Calcd. For C24H29N5O2.0.1(CH2Cl2): C, 67.63; H, 6.88; N, 16.36. Found: C, 67.59; H, 6.99; N, 16.02.

Workup

  1. temperatureThe mixture was warmed
  2. temperatureto reflux
  3. concentrationconcentrated to a yellow solid
  4. customPurification by column chromatography on silica gel (eluted with CH2Cl2/MeOH/NH4OH)
  5. customfollow by purification by radial chromatography (eluted with CH2Cl2/MeOH/NH4OH 94:5:1)

Sources & evidence

ORD record
ord-575d3c82b94e40d39534fc3b0b190cb3
Source dataset
uspto-grants-2011_01
Patent number
US07863293B2

Reaction notes

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