Water → HCID 59383142, compound

HRID 555686Notes

Reaction equation

HRID 555686 reaction equation
[C:1]([C:4]12[CH2:11][CH2:10][C:7]([NH:12][CH2:13][C:14]([N:16]3[CH2:20][C@@H:19]([F:21])[CH2:18][C@H:17]3[C:22]#[N:23])=[O:15])([CH2:8][CH2:9]1)[CH2:6][CH2:5]2)([OH:3])=[O:2].C(=O)([O-])[O-].[Cs+].[Cs+].[CH2:30](Br)[C:31]1[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=1.O>CN(C)C=O>[CH2:30]([O:2][C:1]([C:4]12[CH2:11][CH2:10][C:7]([NH:12][CH2:13][C:14]([N:16]3[CH2:20][C@@H:19]([F:21])[CH2:18][C@H:17]3[C:22]#[N:23])=[O:15])([CH2:8][CH2:9]1)[CH2:6][CH2:5]2)=[O:3])[C:31]1[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=1

Participants

6

Reactant 4

HCID 962WaterHCID 7498Benzyl BromideHCID 10796Cesium carbonateHCID 57634365(2S,4S)-1-[[N-(4-carboxybicyclo[2,2,2]oct-1-yl)amino]acetyl]-4-fluoropyrrolidine-2-carbonitrile

Product 1

HCID 59383142HCID 59383142, compoundYield 79.8%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent2×

Procedure

(2S,4S)-1-[[N-(4-Carboxybicyclo[2.2.2]oct-1-yl)amino]acetyl]-4-fluoropyrrolidine-2-carbonitrile (30.0 mg) was dissolved in N,N-dimethylformamide (1.0 mL) and cesium carbonate (45.3 mg) was added to the solution. Benzyl bromide (17.5 mg) in N,N-dimethylformamide (0.5 mL) was then added while the mixture was chilled in an ice bath and the mixture was stirred for 1 hour. Subsequently, water was added and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with water and saturated brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography (eluant:dichloromethane:methanol=10:1) to give (2S,4S)-1-[[N-(4-benzyloxycarbonyl bicyclo[2.2.2]oct-1-yl)amino]acetyl]-4-fluoropyrrolidine-2-carbonitrile (30.6 mg).

Workup

  1. temperaturewas chilled in an ice bath
  2. extractionthe mixture was extracted with ethyl acetate
  3. washThe ethyl acetate layer was washed with water and saturated brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. concentrationconcentrated under reduced pressure
  6. customThe resulting residue was purified by silica gel column chromatography (eluant:dichloromethane:methanol=10:1)

Sources & evidence

ORD record
ord-883f18bd5f2f4375a9ae7e2f6e9338e2
Source dataset
uspto-grants-2011_11
Patent number
US08053465B2

Reaction notes

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