Diisopropylethylamine → (S)-tert-butyl 1-(1-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)piperidin-4-yl)-2-oxopyrrolidin-3-ylcarbamate

HRID 407996Notes

Reaction equation

HRID 407996 reaction equation
[O:1]=[C:2]1[C@@H:6]([NH:7][C:8](=[O:14])[O:9][C:10]([CH3:13])([CH3:12])[CH3:11])[CH2:5][CH2:4][N:3]1[CH:15]1[CH2:20][CH2:19][NH:18][CH2:17][CH2:16]1.C(N(C(C)C)C(C)C)C.Cl[C:31]1[C:36]([Cl:37])=[CH:35][C:34]([C:38]([F:41])([F:40])[F:39])=[CH:33][N:32]=1>CN(C=O)C.CCOC(C)=O>[Cl:37][C:36]1[C:31]([N:18]2[CH2:17][CH2:16][CH:15]([N:3]3[CH2:4][CH2:5][C@H:6]([NH:7][C:8](=[O:14])[O:9][C:10]([CH3:13])([CH3:12])[CH3:11])[C:2]3=[O:1])[CH2:20][CH2:19]2)=[N:32][CH:33]=[C:34]([C:38]([F:40])([F:39])[F:41])[CH:35]=1

Participants

6

Reactant 3

HCID 81531DiisopropylethylamineHCID 1122342,3-Dichloro-5-(trifluoromethyl)pyridineHCID 86688117(S)-tert-butyl 2-oxo-1-(piperidin-4-yl)pyrrolidin-3-ylcarbamate

Product 1

HCID 67469801(S)-tert-butyl 1-(1-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)piperidin-4-yl)-2-oxopyrrolidin-3-ylcarbamateYield 61.7%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of (S)-tert-butyl 2-oxo-1-(piperidin-4-yl)pyrrolidin-3-ylcarbamate (4.0 g, 14 mmol) in DMF (50 mL) was added N-ethyl-N-isopropylpropan-2-amine (5.5 g, 42 mmol) and 2,3-dichloro-5-(trifluoromethyl)pyridine (9.1 g, 42 mmol) and the reaction was stirred overnight at ambient temperature. The reaction was diluted with EtOAc (about 200 mL) and the organic layer was washed with water (100 mL), and brine (50 mL), dried over MgSO4, and concentrated under vacuum. The crude material was purified on silica using a gradient of DCM to 5% EtOAc/DCM as eluent to give (S)-tert-butyl 1-(1-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)piperidin-4-yl)-2-oxopyrrolidin-3-ylcarbamate (4.0 g, 61%).

Workup

  1. washthe organic layer was washed with water (100 mL), and brine (50 mL)
  2. dry with materialdried over MgSO4
  3. concentrationconcentrated under vacuum
  4. customThe crude material was purified on silica using a gradient of DCM to 5% EtOAc/DCM as eluent

Sources & evidence

ORD record
ord-bc37b8e0b96747018333c52e78bf8c66
Source dataset
uspto-grants-2014_06
Patent number
US08754226B2

Reaction notes

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