Hydrochloric Acid → 1-[(Pyridin-3-yloxy)carbonyl]piperidine-4-carboxylic acid

HRID 2074322Notes

Reaction equation

HRID 2074322 reaction equation
[N:1]1([C:12]([O:14][C:15]2[CH:16]=[N:17][CH:18]=[CH:19][CH:20]=2)=[O:13])[CH2:6][CH2:5][CH:4]([C:7]([O:9]CC)=[O:8])[CH2:3][CH2:2]1.[OH-].[Na+].Cl>C1COCC1.C(O)C>[N:17]1[CH:18]=[CH:19][CH:20]=[C:15]([O:14][C:12]([N:1]2[CH2:2][CH2:3][CH:4]([C:7]([OH:9])=[O:8])[CH2:5][CH2:6]2)=[O:13])[CH:16]=1

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 57507783HCID 57507783, compound

Product 1

HCID 574218421-[(Pyridin-3-yloxy)carbonyl]piperidine-4-carboxylic acidYield 110.5%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

4-Ethyl 1-pyridin-3-yl piperidine-1,4-dicarboxylate (0.732 g) was dissolved in THF (15 ml) and ethanol (8.0 ml), and under ice cooling, an aqueous 1 M sodium hydroxide solution (3.9 ml) was dropwise added thereto. This was stirred at room temperature for 2 hours, and neutralized with 1 M hydrochloric acid (0.5 ml). The reaction liquid was concentrated under reduced pressure, methanol was added to the residue, and the precipitated salt was removed through suction filtration. The filtrate was concentrated to obtain 1-[(pyridin-3-yloxy)carbonyl]piperidine-4-carboxylic acid (0.727 g) as a colorless solid.

Workup

  1. customThe reaction liquid
  2. concentrationwas concentrated under reduced pressure, methanol
  3. additionwas added to the residue
  4. customthe precipitated salt was removed through suction filtration
  5. concentrationThe filtrate was concentrated

Sources & evidence

ORD record
ord-ff224497b4d646c3894c9cb9eedae42b
Source dataset
uspto-grants-2011_04
Patent number
US07919495B2

Reaction notes

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