Dichloromethane → 2-[(4-{2-[(4'-Fluorobiphenyl-4-yl)amino]ethyl}-1,3-thiazol-2-yl)thio]-2-methylpropionic acid hydrochloride

HRID 914403Notes

Reaction equation

HRID 914403 reaction equation
C([O:5][C:6](=[O:32])[C:7]([S:10][C:11]1[S:12][CH:13]=[C:14]([CH2:16][CH2:17][NH:18][C:19]2[CH:24]=[CH:23][C:22]([C:25]3[CH:30]=[CH:29][C:28]([F:31])=[CH:27][CH:26]=3)=[CH:21][CH:20]=2)[N:15]=1)([CH3:9])[CH3:8])(C)(C)C.FC(F)(F)C(O)=O.[Cl:40]CCl>>[ClH:40].[F:31][C:28]1[CH:29]=[CH:30][C:25]([C:22]2[CH:21]=[CH:20][C:19]([NH:18][CH2:17][CH2:16][C:14]3[N:15]=[C:11]([S:10][C:7]([CH3:9])([CH3:8])[C:6]([OH:32])=[O:5])[S:12][CH:13]=3)=[CH:24][CH:23]=2)=[CH:26][CH:27]=1

Participants

4

Reactant 3

HCID 6344DichloromethaneHCID 6422Trifluoroacetic acidHCID 59759087HCID 59759087, compound

Product 1

HCID 673974002-[(4-{2-[(4'-Fluorobiphenyl-4-yl)amino]ethyl}-1,3-thiazol-2-yl)thio]-2-methylpropionic acid hydrochloride

Procedure

2-[(4-{2-[(4′Fluorobiphenyl-4-yl)amino]ethyl}-1,3-thiazol-2-yl)thio]-2-methylpropionic acid tert-butyl ester (300 mg) obtained in Example 256-3 was dissolved in dichloromethane (4 mL), trifluoroacetic acid (4 mL) was added, and the mixture was stirred at room temperature for 20 hr. The reaction mixture was concentrated under reduced pressure, and the residue was purified by silica gel chromatography (elution solvent; hexane:ethyl acetate=2:1 to 1:1). The obtained compound was dissolved in diethyl ether (4 mL), 4 mol/L hydrochloric acid-ethyl acetate (0.5 mL) was added, and the mixture was stirred at room temperature for 1 hr. The precipitated solid was collected by filtration to give the title compound (199 mg) as a white solid.

Workup

  1. concentrationThe reaction mixture was concentrated under reduced pressure
  2. customthe residue was purified by silica gel chromatography (elution solvent; hexane:ethyl acetate=2:1 to 1:1)
  3. dissolutionThe obtained compound was dissolved in diethyl ether (4 mL)
  4. addition4 mol/L hydrochloric acid-ethyl acetate (0.5 mL) was added
  5. stirringthe mixture was stirred at room temperature for 1 hr
  6. filtrationThe precipitated solid was collected by filtration

Sources & evidence

ORD record
ord-0c0e871574174875a4ef77787f6f468f
Source dataset
uspto-grants-2011_09
Patent number
US08026370B2

Reaction notes

Loading…