HCID 59253985, compound → HCID 59253940, compound

HRID 1098738Notes

Reaction equation

HRID 1098738 reaction equation
[CH3:1][O:2][C:3](=[O:28])[CH2:4][O:5][C:6]1[CH:11]=[CH:10][C:9]([NH:12][C:13](=[O:27])[CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][O:19]CC2C=CC=CC=2)=[CH:8][CH:7]=1>CO.CN(C)C=O.[Pd]>[CH3:1][O:2][C:3](=[O:28])[CH2:4][O:5][C:6]1[CH:11]=[CH:10][C:9]([NH:12][C:13](=[O:27])[CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][OH:19])=[CH:8][CH:7]=1

Participants

5

Reactant 1

HCID 59253985HCID 59253985, compound

Product 1

HCID 59253940HCID 59253940, compoundYield 24.4%

Reagents, catalysts & solvents 3

HCID 23938PalladiumCatalystHCID 887MethanolSolventHCID 6228DimethylformamideSolvent

Procedure

[4-(6-Benzyloxyhexanoylamino)-phenoxy]-acetic acid methyl ester 57 (24 grms, 62.33 mmol) was dissolved in a mixture of methanol (200 ml) and dimethyl form-amide (50 ml) in a pressure vessel. Palladium on carbon (5%, 15 g) was added and the mixture stirred under an atmosphere of hydrogen (4 kg) for 24 hours. Catalyst was removed by filtration, and the solvents distilled off under vacuum. Crude 58 was purified by column chromatography on silica gel using chloroform as eluant to get pure 58 (4.5 g, 24.4%) as a white powder with an m.p. between 87.5-90.4° C.

Workup

  1. customCatalyst was removed by filtration
  2. distillationthe solvents distilled off under vacuum
  3. customCrude 58 was purified by column chromatography on silica gel

Sources & evidence

ORD record
ord-203a7798482f45dd8eb858bc726ee53a
Source dataset
uspto-grants-2012_03
Patent number
US08143325B2

Reaction notes

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