Hydrochloric Acid → 10-[(3RS,4RS)-7-hydroxy-3-(4-hydroxyphenyl)-3-methylthiochroman-4-yl]-2-(3,3,4,4,5,5,6,6,6-nonafluorohexyl)decanoic acid

HRID 1267482Notes

Reaction equation

HRID 1267482 reaction equation
[OH:1][C:2]1[CH:11]=[C:10]2[C:5]([CH:6]([CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH:28]([CH2:34][CH2:35][C:36]([F:48])([F:47])[C:37]([F:46])([F:45])[C:38]([F:44])([F:43])[C:39]([F:42])([F:41])[F:40])[C:29]([O:31]CC)=[O:30])[C:7]([C:13]3[CH:18]=[CH:17][C:16]([OH:19])=[CH:15][CH:14]=3)([CH3:12])[CH2:8][S:9]2)=[CH:4][CH:3]=1.[OH-].[Na+].Cl>C(O)C.O>[OH:1][C:2]1[CH:11]=[C:10]2[C:5]([CH:6]([CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH:28]([CH2:34][CH2:35][C:36]([F:48])([F:47])[C:37]([F:45])([F:46])[C:38]([F:43])([F:44])[C:39]([F:40])([F:41])[F:42])[C:29]([OH:31])=[O:30])[C:7]([C:13]3[CH:18]=[CH:17][C:16]([OH:19])=[CH:15][CH:14]=3)([CH3:12])[CH2:8][S:9]2)=[CH:4][CH:3]=1

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 18546293ethyl 10-[(3RS,4RS)-7-hydroxy-3-(4-hydroxyphenyl)-3-methylthiochroman-4-yl]-2-(3,3,4,4,5,5,6,6,6-nonafluorohexyl)decanoate

Product 1

HCID 989631610-[(3RS,4RS)-7-hydroxy-3-(4-hydroxyphenyl)-3-methylthiochroman-4-yl]-2-(3,3,4,4,5,5,6,6,6-nonafluorohexyl)decanoic acidYield 87%

Reagents, catalysts & solvents 1

HCID 19096565Water ethanolSolvent

Procedure

Ethyl 10-[(3RS,4RS)-7-hydroxy-3-(4-hydroxyphenyl)-3-methylthiochroman-4-yl]-2-(3,3,4,4,5,5,6,6,6-nonafluorohexyl)decanoate (0.38 g, 0.53 mmol) and sodium hydroxide (170 mg, 4.2 mmol) were added to an ethanol/water mixture (2:1, 15 ml), followed by heating under reflux for 4 hours. After the reaction mixture was neutralized with 1N hydrochloric acid, the solvent was distilled off and the resulting residue was diluted with water, adjusted to pH 2-3 with 1N hydrochloric acid, and then extracted twice with ethyl acetate. The combined organic layers were washed with saturated aqueous sodium chloride and dried over anhydrous magnesium sulfate. After distilling off the solvent, the residue was purified by silica gel column chromatography (eluent: ethyl acetate/hexane=1/4) to give 10-[(3RS,4RS)-7-hydroxy-3-(4-hydroxyphenyl)-3-methylthiochroman-4-yl]-2-(3,3,4,4,5,5,6,6,6-nonafluorohexyl)decanoic acid (260 mg, Yield 87%) as a colorless foam.

Workup

  1. temperatureby heating
  2. temperatureunder reflux for 4 hours
  3. distillationthe solvent was distilled off
  4. additionthe resulting residue was diluted with water
  5. extractionextracted twice with ethyl acetate
  6. washThe combined organic layers were washed with saturated aqueous sodium chloride
  7. dry with materialdried over anhydrous magnesium sulfate
  8. distillationAfter distilling off the solvent
  9. customthe residue was purified by silica gel column chromatography (eluent: ethyl acetate/hexane=1/4)

Sources & evidence

ORD record
ord-25bc1d2f845b4121bf738dc59d4d114f
Source dataset
uspto-grants-2003_04
Patent number
US06552069B1

Reaction notes

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