Sodium Hydroxide → HCID 66597398, compound

HRID 1627853Notes

Reaction equation

HRID 1627853 reaction equation
[CH3:1][C:2]1[N:7]=[C:6]2[S:8][C:9]3[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=3[C:5]2=[C:4]([C:15]2[CH:20]=[CH:19][C:18]([CH3:21])=[CH:17][CH:16]=2)[C:3]=1[CH:22]([CH2:27][CH2:28][CH3:29])[C:23]([O:25]C)=[O:24].[OH-].[Na+]>CO.C(O)C>[CH3:1][C:2]1[N:7]=[C:6]2[S:8][C:9]3[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=3[C:5]2=[C:4]([C:15]2[CH:20]=[CH:19][C:18]([CH3:21])=[CH:17][CH:16]=2)[C:3]=1[CH:22]([CH2:27][CH2:28][CH3:29])[C:23]([OH:25])=[O:24]

Participants

5

Reactant 2

HCID 14798Sodium HydroxideHCID 66597287HCID 66597287, compound

Product 1

HCID 66597398HCID 66597398, compoundYield 26.4%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 887MethanolSolvent

Procedure

To a solution of methyl [2-methyl-4-p-tolylbenzo[4,5]thieno[2,3-b]pyridin-3-yl]pentanoate (0.122 g; 0.302 mmol) in methanol (6.2 mL) and ethanol (3.1 mL) was added a 5% sodium hydroxide solution (8 mL; 10.00 mmol). The reaction mixture was heated under reflux for 3 h. After cooling to room temperature, the reaction mixture was concentrated under reduced pressure. The residue was suspended in water, acidified with 1N HCl (pH˜2) and extracted with ethyl acetate. The organic layer was washed with water and brine, dried over sodium sulphate, filtered and concentrated under reduced pressure. The residue was crystallized from a mixture of ethyl acetate/heptane to afford 0.031 g (26%) of the title compound as a white solid.

Workup

  1. temperatureThe reaction mixture was heated
  2. temperatureunder reflux for 3 h
  3. concentrationthe reaction mixture was concentrated under reduced pressure
  4. extractionextracted with ethyl acetate
  5. washThe organic layer was washed with water and brine
  6. dry with materialdried over sodium sulphate
  7. filtrationfiltered
  8. concentrationconcentrated under reduced pressure
  9. customThe residue was crystallized from a mixture of ethyl acetate/heptane

Sources & evidence

ORD record
ord-a48110ac1dc740ca8e8e36f40faa9150
Source dataset
uspto-grants-2014_07
Patent number
US08785638B2

Reaction notes

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