Sodium Hydroxide → HCID 46928679, compound

HRID 416987Notes

Reaction equation

HRID 416987 reaction equation
C([O:3][C:4](=[O:47])[CH2:5][CH2:6][CH2:7][O:8][C:9]1[CH:14]=[CH:13][CH:12]=[C:11]([CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][O:21][C:22]2[CH:27]=[C:26]([O:28][CH2:29][CH3:30])[CH:25]=[C:24]([C:31]3[CH:39]=[CH:38][C:34]4[O:35][CH2:36][O:37][C:33]=4[CH:32]=3)[CH:23]=2)[C:10]=1[CH2:40][CH2:41][C:42]([O:44]CC)=[O:43])C.[OH-].[Na+]>C1COCC1.C(O)C>[O:35]1[C:34]2[CH:38]=[CH:39][C:31]([C:24]3[CH:23]=[C:22]([CH:27]=[C:26]([O:28][CH2:29][CH3:30])[CH:25]=3)[O:21][CH2:20][CH2:19][CH2:18][CH2:17][CH2:16][CH2:15][C:11]3[C:10]([CH2:40][CH2:41][C:42]([OH:44])=[O:43])=[C:9]([CH:14]=[CH:13][CH:12]=3)[O:8][CH2:7][CH2:6][CH2:5][C:4]([OH:47])=[O:3])=[CH:32][C:33]=2[O:37][CH2:36]1

Participants

5

Reactant 2

HCID 14798Sodium HydroxideHCID 59496796HCID 59496796, compound

Product 1

HCID 46928679HCID 46928679, compoundYield 95%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

To a solution of the 4-[3-[6-(3-benzo[1,3]dioxol-5-yl-5-ethoxy-phenoxy)-hexyl]-2-(2-ethoxycarbonyl-ethyl)-phenoxy]-butyric acid ethyl ester (152 mg, 0.23 mmol) in THF (5 mL) and ethanol (5 mL) was added aqueous 1.0 N sodium hydroxide (5 mL) at room temperature. The resulting suspension was stirred for 5 h at room temperature at which time TLC analysis of the mixture indicated the absence of starting material. Then, the reaction mixture was concentrated and the residue was diluted with water (20 mL) and extracted with diethyl ether (30 mL) to remove any neutral impurities. The aqueous layer was acidified with 1.0 N hydrochloric acid and the precipitated white organic compound was extracted into ethyl acetate (2×30 mL). The combined ethyl acetate extracts were washed with brine solution (50 mL) and the organic layers were dried over anhydrous magnesium sulfate. Filtration of the drying agent and removal of the solvent afforded 4-[3-[6-(3-benzo[1,3]dioxol-5-yl-5-ethoxy-phenoxy)-hexyl]-2-(2-carboxy-ethyl)-phenoxy]-butyric acid (129 mg, 95%) as a off-white waxy solid: ES(+)-HRMS m/e calcd for C34H40O9 (M+H)+ 593.2745. found 593.2744.

Workup

  1. concentrationThen, the reaction mixture was concentrated
  2. additionthe residue was diluted with water (20 mL)
  3. extractionextracted with diethyl ether (30 mL)
  4. customto remove any neutral impurities
  5. extractionthe precipitated white organic compound was extracted into ethyl acetate (2×30 mL)
  6. washThe combined ethyl acetate extracts were washed with brine solution (50 mL)
  7. dry with materialthe organic layers were dried over anhydrous magnesium sulfate
  8. filtrationFiltration of the drying agent and removal of the solvent

Sources & evidence

ORD record
ord-0f8661365e5c4c098e510c9f746cb53e
Source dataset
uspto-grants-2012_01
Patent number
US08088936B2

Reaction notes

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