(1-methylpiperidin-4-yl)(pyridin-2-yl)methanone → HCID 131727019, compound

HRID 30224Notes

Reaction equation

HRID 30224 reaction equation
[CH3:1][N:2]1[CH2:7][CH2:6][CH:5]([C:8]([C:10]2[N:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)=[O:9])[CH2:4][CH2:3]1.[ClH:16].C(O)C>C(O)C>[ClH:16].[ClH:16].[CH3:1][N:2]1[CH2:7][CH2:6][CH:5]([C:8]([C:10]2[N:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)=[O:9])[CH2:4][CH2:3]1

Participants

4

Reactant 2

HCID 11321671(1-methylpiperidin-4-yl)(pyridin-2-yl)methanoneHCID 21887872Ethanol hydrochloride

Product 1

HCID 131727019HCID 131727019, compoundYield 63%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

Resuspend the crude 2-amino-(6-(1-methylpiperidin-4-ylcarbonyl)-pyridine (14.5 g, 66.2 mmol) in ethanol (30 mL), add 2.5M HCl/ethanol (100 mL), stir the mixture for 30 minutes, and then remove the solvent under reduce pressure. Resuspend the resulting solid in 125 ml isopropanol and heat under reflux for 30 minutes. Cool the reaction mixture to room temperature, filtered-off the precipitate, rinse with 20 ml isopropanol, and dry under vacuum at 50° C. to obtain 2-amino-(6-(1-methylpiperidin-4-ylcarbonyl)-pyridine 2HCl (11 g, 63% yield corrected by HPLC % w/w).

Workup

  1. customremove the solvent
  2. temperatureheat
  3. temperatureunder reflux for 30 minutes
  4. washfiltered-off the precipitate, rinse with 20 ml isopropanol
  5. customdry under vacuum at 50° C.

Sources & evidence

ORD record
ord-7accb4b5a9d648c78028f761ec2e5164
Source dataset
uspto-grants-2008_09
Patent number
US07423050B2

Reaction notes

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