Triethylamine → N-[(6S,9R)-6-(2,3-difluorophenyl)-3-(2,2,2-trifluoroethyl)-6,7,8,9-tetrahydro-5H-imidazo[1,2-a]azepin-9-yl]-4-(2,4-dioxoimidazolidin-1-yl)piperidine-1-carboxamide

HRID 1664889Notes

Reaction equation

HRID 1664889 reaction equation
C(N(CC)CC)C.[F:8][C:9]1[C:14]([F:15])=[CH:13][CH:12]=[CH:11][C:10]=1[C@H:16]1[CH2:22][N:21]2[C:23]([CH2:26][C:27]([F:30])([F:29])[F:28])=[CH:24][N:25]=[C:20]2[C@H:19]([NH2:31])[CH2:18][CH2:17]1.Cl[C:33](OC1C=CC([N+]([O-])=O)=CC=1)=[O:34].[NH:45]1[CH2:50][CH2:49][CH:48]([N:51]2[CH2:55][C:54](=[O:56])[NH:53][C:52]2=[O:57])[CH2:47][CH2:46]1.C(=O)([O-])[O-].[Na+].[Na+]>O1CCCC1>[F:8][C:9]1[C:14]([F:15])=[CH:13][CH:12]=[CH:11][C:10]=1[C@H:16]1[CH2:22][N:21]2[C:23]([CH2:26][C:27]([F:30])([F:28])[F:29])=[CH:24][N:25]=[C:20]2[C@H:19]([NH:31][C:33]([N:45]2[CH2:46][CH2:47][CH:48]([N:51]3[CH2:55][C:54](=[O:56])[NH:53][C:52]3=[O:57])[CH2:49][CH2:50]2)=[O:34])[CH2:18][CH2:17]1

Participants

7

Reactant 5

HCID 8471Triethylamine2×HCID 10340Sodium CarbonateHCID 821294-Nitrophenyl chloroformateHCID 574289231-Piperidin-4-ylimidazolidine-2,4-dioneHCID 67438873(6S,9R)-6-(2,3-difluorophenyl)-3-(2,2,2-trifluoroethyl)-6,7,8,9-tetrahydro-5H-imidazo[1,2-a]azepin-9-amine

Product 1

HCID 59722678N-[(6S,9R)-6-(2,3-difluorophenyl)-3-(2,2,2-trifluoroethyl)-6,7,8,9-tetrahydro-5H-imidazo[1,2-a]azepin-9-yl]-4-(2,4-dioxoimidazolidin-1-yl)piperidine-1-carboxamideYield 59%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

Triethylamine (16 μL, 0.11 mmol) was added to a solution of (6S,9R)-6-(2,3-difluorophenyl)-3-(2,2,2-trifluoroethyl)-6,7,8,9-tetrahydro-5H-imidazo[1,2-a]azepin-9-amine (38 mg, 0.11 mmol) and 4-nitrophenyl chloroformate (23 mg, 0.11 mmol) in tetrahydrofuran (2 mL) at 0° C. After 1 h, 1-piperidin-4-ylimidazolidine-2,4-dione (21 mg, 0.11 mmol) and triethylamine (47 μL, 0.33 mmol) were added and the mixture allowed to warm to ambient temperature. After 1 h, saturated aqueous sodium carbonate was added and the mixture was extracted with dichloromethane. The organic layer was washed with saturated aqueous sodium bicarbonate (3×), saturated brine, dried over sodium sulfate, filtered and concentrated. Purification by silica gel chromatography [100% dichloromethane→93% dichloromethane/methanol] gave the title compound (36 mg). MS 555.2126 (M+1).

Workup

  1. waitAfter 1 h
  2. extractionthe mixture was extracted with dichloromethane
  3. washThe organic layer was washed with saturated aqueous sodium bicarbonate (3×), saturated brine
  4. dry with materialdried over sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customPurification by silica gel chromatography [100% dichloromethane→93% dichloromethane/methanol]

Sources & evidence

ORD record
ord-d8d31ac84d1d48e4960b6feb119f3eaf
Source dataset
uspto-grants-2011_10
Patent number
US08039460B2

Reaction notes

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