Sodium Hydroxide → (5)-2-(6-((2',6'-Dimethyl-4'-(piperidin-4-yloxy)biphenyl-3-yl)methoxy)-2,3-dihydrobenzofuran-3-yl)acetic acid

HRID 2280641Notes

Reaction equation

HRID 2280641 reaction equation
[CH3:1][C:2]1[CH:7]=[C:6]([O:8][CH:9]2[CH2:14][CH2:13][NH:12][CH2:11][CH2:10]2)[CH:5]=[C:4]([CH3:15])[C:3]=1[C:16]1[CH:21]=[CH:20][CH:19]=[C:18]([CH2:22][O:23][C:24]2[CH:37]=[CH:36][C:27]3[C@H:28]([CH2:31][C:32]([O:34]C)=[O:33])[CH2:29][O:30][C:26]=3[CH:25]=2)[CH:17]=1.[OH-].[Na+]>CO>[CH3:1][C:2]1[CH:7]=[C:6]([O:8][CH:9]2[CH2:10][CH2:11][NH:12][CH2:13][CH2:14]2)[CH:5]=[C:4]([CH3:15])[C:3]=1[C:16]1[CH:21]=[CH:20][CH:19]=[C:18]([CH2:22][O:23][C:24]2[CH:37]=[CH:36][C:27]3[C@H:28]([CH2:31][C:32]([OH:34])=[O:33])[CH2:29][O:30][C:26]=3[CH:25]=2)[CH:17]=1

Participants

4

Reactant 2

HCID 14798Sodium HydroxideHCID 89701746(S)-methyl 2-(6-((2',6'-dimethyl-4'-(piperidin-4-yloxy)biphenyl-3-yl)methoxy)-2,3-dihydrobenzofuran-3-yl)acetate

Product 1

HCID 71656906(5)-2-(6-((2',6'-Dimethyl-4'-(piperidin-4-yloxy)biphenyl-3-yl)methoxy)-2,3-dihydrobenzofuran-3-yl)acetic acidYield 106%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

The crude (S)-methyl 2-(6-((2′,6′-dimethyl-4′-(piperidin-4-yloxy)biphenyl-3-yl)methoxy)-2,3-dihydrobenzofuran-3-yl)acetate 4a (31 mg, 0.06 mmol) was dissolved in 5 mL of methanol, followed by addition of 1M aqueous sodium hydroxide solution (0.6 mL, 0.62 mmol). The reaction solution was reacted for 2 hours. The resulting solution was concentrated under reduced pressure, mixed with 3 mL of water, 1M citric acid was added dropwise to adjust the pH to 5, and the solution was extracted with ethyl acetate (20 mL×2). The combined organic extracts were washed with saturated sodium chloride solution (30 mL), dried with anhydrous magnesium sulphate, and filtered. The filtrate was concentrated under reduced pressure to obtain the title compound (5)-2-(6-((2′,6′-dimethyl-4′-(piperidin-4-yloxy)biphenyl-3-yl)methoxy)-2,3-dihydrobenzofuran-3-yl)acetic acid 4 (31 mg, yield 100%) as a white solid.

Workup

  1. customThe reaction solution was reacted for 2 hours
  2. concentrationThe resulting solution was concentrated under reduced pressure
  3. additionmixed with 3 mL of water, 1M citric acid
  4. additionwas added dropwise
  5. extractionthe solution was extracted with ethyl acetate (20 mL×2)
  6. washThe combined organic extracts were washed with saturated sodium chloride solution (30 mL)
  7. dry with materialdried with anhydrous magnesium sulphate
  8. filtrationfiltered
  9. concentrationThe filtrate was concentrated under reduced pressure

Sources & evidence

ORD record
ord-f4e068c162e4484b9a602b452cc9d943
Source dataset
uspto-grants-2015_09
Patent number
US09139548B2

Reaction notes

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