Lithium hydroxide, monohydrate → 2-(5-Chloro-6-(2,2,2-trifluoroethoxy)-4'-(trifluoromethyl)biphenyl-3-yl)-3-cyclobutylpropanoic acid

HRID 1183659Notes

Reaction equation

HRID 1183659 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([CH:24]([CH2:30][CH:31]2[CH2:34][CH2:33][CH2:32]2)[C:25]([O:27]CC)=[O:26])[CH:5]=[C:6]([C:14]2[CH:19]=[CH:18][C:17]([C:20]([F:23])([F:22])[F:21])=[CH:16][CH:15]=2)[C:7]=1[O:8][CH2:9][C:10]([F:13])([F:12])[F:11].O.[OH-].[Li+]>CO.C1COCC1.O>[Cl:1][C:2]1[CH:3]=[C:4]([CH:24]([CH2:30][CH:31]2[CH2:34][CH2:33][CH2:32]2)[C:25]([OH:27])=[O:26])[CH:5]=[C:6]([C:14]2[CH:15]=[CH:16][C:17]([C:20]([F:21])([F:22])[F:23])=[CH:18][CH:19]=2)[C:7]=1[O:8][CH2:9][C:10]([F:12])([F:13])[F:11]

Participants

4

Reactant 2

HCID 168937Lithium hydroxide, monohydrateHCID 57995519Ethyl 2-(5-chloro-6-(2,2,2-trifluoroethoxy)-4'-(trifluoromethyl)biphenyl-3-yl)-3-cyclobutylpropanoate

Product 1

HCID 441319152-(5-Chloro-6-(2,2,2-trifluoroethoxy)-4'-(trifluoromethyl)biphenyl-3-yl)-3-cyclobutylpropanoic acidYield 45%

Reagents, catalysts & solvents 1

HCID 21892291Methanol tetrahydrofuran waterSolvent

Procedure

A mixture of ethyl 2-(5-chloro-6-(2,2,2-trifluoroethoxy)-4′-(trifluoromethyl)biphenyl-3-yl)-3-cyclobutylpropanoate (0.25 g, 0.49 mmol) and lithium hydroxide monohydrate (0.206 g, 4.9 mmol) in a MeOH/THF/Water solvent mixture (10 ml/10 ml/10 ml) was stirred for 3 h at room temperature. After completion of reaction volatiles were removed under reduced pressure. Residue was diluted with water, acidified with 5% HCl solution and extracted with ethyl acetate (3×50 mL). The combined organic layers were washed with water, dried over Na2SO4, filtered and evaporated under reduced pressure. The residue was purified by Flash Column Chromatography to give 2-(5-chloro-6-(2,2,2-trifluoroethoxy)-4′-(trifluoromethyl)biphenyl-3-yl)-3-cyclobutylpropanoic acid (0.106 g) as a white solid. 1H-NMR (CDCl3, 400 MHz): 7.72 (d, 2H); 7.65 (d, 2H), 7.41 (s, 1H); 7.18 (s, 1H); 3.98 (q, 2H); 3.51 (t, 1H); 2.15-2.28 (m, 2H); 1.55-2.15 (m, 7H).

Workup

  1. customAfter completion of reaction volatiles
  2. customwere removed under reduced pressure
  3. additionResidue was diluted with water
  4. extractionextracted with ethyl acetate (3×50 mL)
  5. washThe combined organic layers were washed with water
  6. dry with materialdried over Na2SO4
  7. filtrationfiltered
  8. customevaporated under reduced pressure
  9. customThe residue was purified by Flash Column Chromatography

Sources & evidence

ORD record
ord-4d38f08e4b0c478092c00dad6aafb42d
Source dataset
uspto-grants-2014_03
Patent number
US08664249B2

Reaction notes

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