Ammonium formate → 4-(1-Acetylpiperidin-4-yl)furo[3,2-c]pyridine

HRID 1018987Notes

Reaction equation

HRID 1018987 reaction equation
[C:1]([N:4]1[CH2:9][CH:8]=[C:7]([C:10]2[C:15]3[CH:16]=[CH:17][O:18][C:14]=3[CH:13]=[CH:12][N:11]=2)[CH2:6][CH2:5]1)(=[O:3])[CH3:2].C([O-])=O.[NH4+]>CO.[Pd]>[C:1]([N:4]1[CH2:9][CH2:8][CH:7]([C:10]2[C:15]3[CH:16]=[CH:17][O:18][C:14]=3[CH:13]=[CH:12][N:11]=2)[CH2:6][CH2:5]1)(=[O:3])[CH3:2]

Participants

5

Reactant 2

HCID 2723923Ammonium formate2×HCID 183997764-(1-Acetyl-1,2,3,6-tetrahydropyridin-4-yl)furo[3,2-c]pyridine

Product 1

HCID 183997294-(1-Acetylpiperidin-4-yl)furo[3,2-c]pyridine

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalyst2×HCID 887MethanolSolvent

Procedure

0.7 g of Pd/C (10%) is added to a solution of 3.4 g of the product obtained in Step C and 4.4 g of ammonium formate in 150 ml of anhydrous methanol under a stream of argon. After refluxing for 45 minutes, the reaction mixture is cooled, 4.4 g of ammonium formate and 0.2 g of Pd/C (10%) are added, and the reaction mixture is then heated at reflux for 30 minutes. After returning to ambient temperature, filtration over Celite and concentration under reduced pressure, the residue is taken up in water and then extracted with dichloromethane. The expected product is isolated by extraction, drying, filtration and concentration under reduced pressure.

Workup

  1. temperatureAfter refluxing for 45 minutes
  2. temperaturethe reaction mixture is cooled
  3. temperaturethe reaction mixture is then heated
  4. temperatureat reflux for 30 minutes
  5. customAfter returning to ambient temperature
  6. filtrationfiltration
  7. concentrationover Celite and concentration under reduced pressure
  8. extractionextracted with dichloromethane

Sources & evidence

ORD record
ord-b0a5f0e040c14630a5e0b2bf9cefc1c3
Source dataset
uspto-grants-2002_11
Patent number
US06486171B2

Reaction notes

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