Lithium Hydroxide → 4-{[(4-tert-butylphenyl)amino]carbonyl}benzoic Acid

HRID 1822929Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1822929
[C:1]([C:5]1[CH:10]=[CH:9][C:8]([NH:11][C:12]([C:14]2[CH:23]=[CH:22][C:17]([C:18]([O:20]C)=[O:19])=[CH:16][CH:15]=2)=[O:13])=[CH:7][CH:6]=1)([CH3:4])([CH3:3])[CH3:2].[Li+].[OH-]>O1CCCC1.CO>[C:1]([C:5]1[CH:6]=[CH:7][C:8]([NH:11][C:12]([C:14]2[CH:15]=[CH:16][C:17]([C:18]([OH:20])=[O:19])=[CH:22][CH:23]=2)=[O:13])=[CH:9][CH:10]=1)([CH3:4])([CH3:2])[CH3:3]

Komponenten

5

Edukt 2

HCID 3939Lithium HydroxideHCID 7913868Methyl 4-{[(4-tert-butylphenyl)amino]carbonyl}benzoate

Produkt 1

HCID 141864734-{[(4-tert-butylphenyl)amino]carbonyl}benzoic Acid

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 887MethanolLösungsmittelHCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

The product from Example 23A (0.71 g, 2.28 mmol) in tetrahydrofuran (23 mL) and CH3OH (5.7 mL) was treated with 1N aqueous LiOH (5.7 mL, 5.7 mmol). After stirring overnight at room temperature, the organic solvents were removed under reduced pressure and the remaining aqueous solution was acidified to pH 1 with concentrated HCl. The acidified solution was extracted with ethyl acetate. The extracts were combined, dried over Na2SO4, filtered, and the filtrate concentrated under reduced pressure to provide the title compound as a solid. 1H NMR (300 MHz, DMSO-d6) δ 10.33 (s, 1H), 8.06 (m, 4H), 7.69 (m, 2H), 7.38 (m, 2H), 1.29 (s, 9H); MS (ESI+) m/z 298 (M+H)+.

Aufarbeitung

  1. customthe organic solvents were removed under reduced pressure
  2. extractionThe acidified solution was extracted with ethyl acetate
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationthe filtrate concentrated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-23862680c8db4ea2ade1809f7ed588b0
Quelldatensatz
uspto-grants-2006_05
Patentnummer
US07037927B2

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