Sodium Hydroxide → (E)-[5-(4-{1-ethyl-1-[4-(3-ethyl-3-hydroxy-1-pentenyl)-3-methyl-phenyl]-propyl}-phenyl)-3-pyridinyl]-acetic Acid

HRID 547018Notes

Reaction equation

HRID 547018 reaction equation
[OH-].[Na+].C[O:4][C:5](=[O:39])[CH2:6][C:7]1[CH:8]=[N:9][CH:10]=[C:11]([C:13]2[CH:18]=[CH:17][C:16]([C:19]([CH2:37][CH3:38])([C:22]3[CH:27]=[CH:26][C:25](/[CH:28]=[CH:29]/[C:30]([CH2:34][CH3:35])([OH:33])[CH2:31][CH3:32])=[C:24]([CH3:36])[CH:23]=3)[CH2:20][CH3:21])=[CH:15][CH:14]=2)[CH:12]=1.[Cl-].[NH4+]>CO.O1CCCC1>[CH2:20]([C:19]([C:16]1[CH:15]=[CH:14][C:13]([C:11]2[CH:12]=[C:7]([CH2:6][C:5]([OH:39])=[O:4])[CH:8]=[N:9][CH:10]=2)=[CH:18][CH:17]=1)([C:22]1[CH:27]=[CH:26][C:25](/[CH:28]=[CH:29]/[C:30]([CH2:31][CH3:32])([OH:33])[CH2:34][CH3:35])=[C:24]([CH3:36])[CH:23]=1)[CH2:37][CH3:38])[CH3:21]

Participants

5

Reactant 3

HCID 14798Sodium HydroxideHCID 25517Ammonium ChlorideHCID 57708973(E)-[5-(4-{1-ethyl-1-[4-(3-ethyl-3-hydroxy-1-pentenyl)-3-methyl-phenyl]-propyl}-phenyl)-pyridin-3-yl]-acetic Acid Methyl Ester

Product 1

HCID 57709031(E)-[5-(4-{1-ethyl-1-[4-(3-ethyl-3-hydroxy-1-pentenyl)-3-methyl-phenyl]-propyl}-phenyl)-3-pyridinyl]-acetic AcidYield 66%

Reagents, catalysts & solvents 1

HCID 21899815MeOH tetrahydrofuranSolvent

Procedure

A 1 N sodium hydroxide aqueous solution (0.279 mL, 0.279 mmol) was added to a solution of (E)-[5-(4-{1-ethyl-1-[4-(3-ethyl-3-hydroxy-1-pentenyl)-3-methyl-phenyl]-propyl}-phenyl)-pyridin-3-yl]-acetic acid methyl ester (Example 123-(1); 46.5 mg, 0.093 mmol) in methanol-tetrahydrofuran (1:1, 4 mL), and the mixture was stirred at room temperature overnight. The reaction mixture was then poured into a saturated aqueous ammonium chloride solution, followed by extraction with dichloromethane. The organic layer was dried over anhydrous magnesium sulfate, filtered and concentrated under reduced pressure. The resulting residue was purified by silica gel chromatography (chloroform:methanol=10:1) to give the target compound as a colorless oil (29.7 mg, 66%).

Workup

  1. extractionfollowed by extraction with dichloromethane
  2. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated under reduced pressure
  5. customThe resulting residue was purified by silica gel chromatography (chloroform:methanol=10:1)

Sources & evidence

ORD record
ord-73a3f7e92a0b44c89d9b4ef8d613e6f8
Source dataset
uspto-grants-2011_05
Patent number
US07935688B2

Reaction notes

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