Citric Acid → {2-[7-(methyl{[2-(trifluoromethyl)phenyl]sulfonyl}amino)-1H-indol-2-yl]-4,5-dihydro-1,3-thiazol-5-yl}acetic acid

HRID 2239099Notes

Reaction equation

HRID 2239099 reaction equation
[CH3:1][N:2]([S:23]([C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][C:27]=1[C:32]([F:35])([F:34])[F:33])(=[O:25])=[O:24])[C:3]1[CH:4]=[CH:5][CH:6]=[C:7]2[C:11]=1[NH:10][C:9]([C:12]1[S:13][CH:14]([CH2:17][C:18]([O:20]CC)=[O:19])[CH2:15][N:16]=1)=[CH:8]2.[OH-].[K+].C(O)(=O)CC(CC(O)=O)(C(O)=O)O>O1CCCC1.CO>[CH3:1][N:2]([S:23]([C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][C:27]=1[C:32]([F:35])([F:34])[F:33])(=[O:25])=[O:24])[C:3]1[CH:4]=[CH:5][CH:6]=[C:7]2[C:11]=1[NH:10][C:9]([C:12]1[S:13][CH:14]([CH2:17][C:18]([OH:20])=[O:19])[CH2:15][N:16]=1)=[CH:8]2

Participants

6

Reactant 3

HCID 311Citric AcidHCID 14797Potassium HydroxideHCID 59135730Ethyl{2-[7-(methyl{[2-(trifluoromethyl)phenyl]sulfonyl}amino)-1H-indol-2-yl]-4,5-dihydro-1,3-thiazol-5-yl}acetate

Product 1

HCID 59136131{2-[7-(methyl{[2-(trifluoromethyl)phenyl]sulfonyl}amino)-1H-indol-2-yl]-4,5-dihydro-1,3-thiazol-5-yl}acetic acidYield 72%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

Ethyl {2-[7-(methyl{[2-(trifluoromethyl)phenyl]sulfonyl}amino)-1H-indol-2-yl]-4,5-dihydro-1,3-thiazol-5-yl}acetate (0.55 g) was dissolved in a mixed solvent of tetrahydrofuran (6 mL)-methanol (6 mL). Aqueous potassium hydroxide solution (prepared by dissolving potassium hydroxide (0.30 g) in water (5 mL)) was added to this solution, and the mixture was stirred at room temperature for 6 hr. The reaction solution was acidified with aqueous citric acid solution, and extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The obtained pale-yellow oil was crystallized from ethyl acetate-hexane to give the title compound (372 mg, yield: 72%) as pale-yellow crystals. MS: 498 (MH+). melting point 170-172° C.

Workup

  1. extractionextracted with ethyl acetate
  2. washThe organic layer was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe obtained pale-yellow oil was crystallized from ethyl acetate-hexane

Sources & evidence

ORD record
ord-138eef0ff2cd44d593ce3845954c5e90
Source dataset
uspto-grants-2010_05
Patent number
US07718798B2

Reaction notes

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