Hydrochloric Acid → HCID 12132309, compound

HRID 2054799Notes

Reaction equation

HRID 2054799 reaction equation
[F:1][C:2]1[CH:24]=[CH:23][C:22]([F:25])=[CH:21][C:3]=1[CH2:4][O:5][C:6]1[CH:11]=[CH:10][C:9]([C:12](=[O:20])[CH2:13][CH2:14][C:15]([O:17]CC)=[O:16])=[CH:8][CH:7]=1.[OH-].[Na+].Cl>C(O)C>[F:1][C:2]1[CH:24]=[CH:23][C:22]([F:25])=[CH:21][C:3]=1[CH2:4][O:5][C:6]1[CH:11]=[CH:10][C:9]([C:12](=[O:20])[CH2:13][CH2:14][C:15]([OH:17])=[O:16])=[CH:8][CH:7]=1

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 21964474HCID 21964474, compound

Product 1

HCID 12132309HCID 12132309, compound

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

To a solution of Ethyl 4-(4-(2,5-Difluorobenzyloxy)phenyl)-4-oxobutyrate (Step B, 16.51 g, 47.4 mmol) in abs ethanol (100 ml) was added 1N NaOH (40 ml) at room temperature. The reaction mixture was stirred for 3 hours, acidified with 1M HCl and concentrated in vacuo. The crude mixture was taken in chloroform and washed with water. The aqueous layer was washed one more time with chloroform. The combined organic layers were dried over Na2SO4, filtered and concentrated. The purification was done by flash chromatography on silica gel column (chloroform:methanol, 95:5 spiked with acetic acid) to provide the title compound as a white solid.

Workup

  1. concentrationconcentrated in vacuo
  2. washwashed with water
  3. washThe aqueous layer was washed one more time with chloroform
  4. dry with materialThe combined organic layers were dried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe purification

Sources & evidence

ORD record
ord-734f6e20fdf24869893b3961069fa6ff
Source dataset
uspto-grants-2008_02
Patent number
US07329782B2

Reaction notes

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