{4-[(R)-2-Oxo-6-((E)-3-oxo-4-phenyl-but-1-enyl)-piperidin-1-yl]-but-2-ynyloxy}-acetonitrile → {4-[(R)-2-Oxo-6-(3-oxo-4-phenyl-butyl)-piperidin-1-yl]-butoxy}-acetonitrile

HRID 349374Notes

Reaction equation

HRID 349374 reaction equation
[O:1]=[C:2]1[CH2:7][CH2:6][CH2:5][C@H:4](/[CH:8]=[CH:9]/[C:10](=[O:18])[CH2:11][C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[N:3]1[CH2:19][C:20]#[C:21][CH2:22][O:23][CH2:24][C:25]#[N:26].[H][H]>[Pd].CO>[O:1]=[C:2]1[CH2:7][CH2:6][CH2:5][C@H:4]([CH2:8][CH2:9][C:10](=[O:18])[CH2:11][C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[N:3]1[CH2:19][CH2:20][CH2:21][CH2:22][O:23][CH2:24][C:25]#[N:26]

Participants

5

Reactant 2

HCID 69020894{4-[(R)-2-Oxo-6-((E)-3-oxo-4-phenyl-but-1-enyl)-piperidin-1-yl]-but-2-ynyloxy}-acetonitrileHCID 178418361HCID 178418361, compound

Product 1

HCID 69022837{4-[(R)-2-Oxo-6-(3-oxo-4-phenyl-butyl)-piperidin-1-yl]-butoxy}-acetonitrileYield 56.1%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 887MethanolSolvent

Procedure

Palladium on carbon (10 wt. %, 7 mg) was added to a solution of {4-[(R)-2-oxo-6-((E)-3-oxo-4-phenyl-but-1-enyl)-piperidin-1-yl]-but-2-ynyloxy}-acetonitrile (35 mg, 0.10 mmol) in MeOH (3.0 mL). A hydrogen atmosphere was established by evacuating and refilling with hydrogen (3×) and the reaction mixture was stirred under a balloon of hydrogen for 19 h. The reaction mixture was filtered through celite, washing with MeOH, and the filtrate was concentrated in vacuo. Purification of the residue by flash column chromatography on silica gel (CH2Cl2→2% MeOH/CH2Cl2, gradient) afforded 20 mg (56%) of the title compound.

Workup

  1. customby evacuating
  2. filtrationThe reaction mixture was filtered through celite
  3. washwashing with MeOH
  4. concentrationthe filtrate was concentrated in vacuo
  5. customPurification of the residue by flash column chromatography on silica gel (CH2Cl2→2% MeOH/CH2Cl2, gradient)

Sources & evidence

ORD record
ord-683898c570b542cab2f3bf48ba16aec0
Source dataset
uspto-grants-2007_02
Patent number
US07179820B2

Reaction notes

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