Hydrochloric Acid → 4-[[3-Methyl-4-(4-trifluoromethyl-benzyloxy)phenyl]sulfanyl]-2-propylphenoxy-acetic acid

HRID 1991152Notes

Reaction equation

HRID 1991152 reaction equation
C([O:3][C:4](=[O:36])[CH2:5][O:6][C:7]1[CH:12]=[CH:11][C:10]([S:13][C:14]2[CH:19]=[CH:18][C:17]([O:20][CH2:21][C:22]3[CH:27]=[CH:26][C:25]([C:28]([F:31])([F:30])[F:29])=[CH:24][CH:23]=3)=[C:16]([CH3:32])[CH:15]=2)=[CH:9][C:8]=1[CH2:33][CH2:34][CH3:35])C.[Li+].[OH-].O.Cl>C1COCC1>[CH3:32][C:16]1[CH:15]=[C:14]([S:13][C:10]2[CH:11]=[CH:12][C:7]([O:6][CH2:5][C:4]([OH:36])=[O:3])=[C:8]([CH2:33][CH2:34][CH3:35])[CH:9]=2)[CH:19]=[CH:18][C:17]=1[O:20][CH2:21][C:22]1[CH:23]=[CH:24][C:25]([C:28]([F:30])([F:31])[F:29])=[CH:26][CH:27]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 962WaterHCID 3939Lithium HydroxideHCID 591291244-[[3-Methyl-4-(4-trifluoromethylbenzyloxy)phenyl]sulfanyl]-2-propylphenoxy-acetic acid ethyl ester

Product 1

HCID 103000564-[[3-Methyl-4-(4-trifluoromethyl-benzyloxy)phenyl]sulfanyl]-2-propylphenoxy-acetic acidYield 78%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

Compound 4.5 (32.7 g, 63.0 mmol) was dissolved in THF (250 mL). To the solution was added 4N LiOH (31.5 mL, 126 mmol) and the reaction was stirred at room temperature for 1 h, after which time water (31.5 mL) was added, and the reaction mixture was stirred for 30 min. 2N HCl (70 mL) was then added to the reaction and the THF was removed in vacuo. The residue was diluted with hexane (250 mL) with stirring, and the deposited crystals were collected by filtration and recrystallized from EtOAc-hexane to provide 4 (24.12 g). MS APSI m/e: 489 (M−H). 1H NMR (400 MHz) (DMSO-d6) δ 12.90 (1H, brs); 7.76 (2H, d, J=8.2 Hz); 7.67 (2H, d, J=8.2 Hz); 7.20-7.05 (4H, m); 6.99 (1H, d, J=8.6 Hz); 6.81 (1H, d, J=8.4 Hz); 5.23 (2H, s); 4.68 (2H, s); 2.56-2.47 (2H, m); 2.18 (3H, s); 1.60-1.47 (2H, m); 0.85 (3H, t, J=7.4 Hz).

Workup

  1. stirringthe reaction mixture was stirred for 30 min
  2. customthe THF was removed in vacuo
  3. additionThe residue was diluted with hexane (250 mL)
  4. stirringwith stirring
  5. filtrationthe deposited crystals were collected by filtration
  6. customrecrystallized from EtOAc-hexane

Sources & evidence

ORD record
ord-ec44bed0c3354017bbb90d98d57a0a75
Source dataset
uspto-grants-2010_01
Patent number
US07645779B2

Reaction notes

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