Hydrochloric Acid → HCID 22315148, compound

HRID 430304Notes

Reaction equation

HRID 430304 reaction equation
C([O:3][C:4](=[O:25])[CH:5]([C:12]1[CH:17]=[CH:16][C:15]([S:18]([CH2:21][CH2:22][CH2:23][CH3:24])(=[O:20])=[O:19])=[CH:14][CH:13]=1)[CH2:6][CH:7]1[CH2:11][CH2:10][CH2:9][CH2:8]1)C.[OH-].[Li+].Cl>O1CCCC1.O.CO>[CH2:21]([S:18]([C:15]1[CH:16]=[CH:17][C:12]([CH:5]([CH2:6][CH:7]2[CH2:11][CH2:10][CH2:9][CH2:8]2)[C:4]([OH:25])=[O:3])=[CH:13][CH:14]=1)(=[O:19])=[O:20])[CH2:22][CH2:23][CH3:24]

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 3939Lithium HydroxideHCID 53679126HCID 53679126, compound

Product 1

HCID 22315148HCID 22315148, compoundYield 68.4%

Reagents, catalysts & solvents 1

HCID 21892291Methanol tetrahydrofuran waterSolvent

Conditions

Temperature
25 °C

Procedure

A solution of 2-[4-(butane-1-sulfonyl)-phenyl]-3-cyclopentyl-propionic acid ethyl ester (140 mg, 0.38 mmol in tetrahydrofuran/water/methanol (0.95 mL, 3:1:1) was treated with a 1N aqueous lithium hydroxide solution (0.76 mL, 0.76 mmol). The reaction was stirred at 25° C. for 8 h. At this time, the reaction was acidified to pH=1 with a 1N aqueous hydrochloric acid solution and extracted with chloroform (3×50 mL). The organics were dried over sodium sulfate, filtered, and concentrated in vacuo. Flash chromatography (Merck Silica gel 60, 230-400 mesh, 90/10 chloroform/methanol) afforded 2-[4-(butane- 1-sulfonyl)-phenyl]-3-cyclopentyl-propionic acid (88.3 mg, 68.4%) as a clear oil: FAB-HRMS m/e calcd for C18H26O4S (M+H)+339.1631 found 339.1638.

Workup

  1. extractionextracted with chloroform (3×50 mL)
  2. dry with materialThe organics were dried over sodium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-75541de5ab684659b69932346928f27a
Source dataset
uspto-grants-2001_11
Patent number
US06320050B1

Reaction notes

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