Lithium Hydroxide → 2'-Cyano-4'-methyl-5-(2,2,2-trifluoro-1-hydroxyethyl)biphenyl-3-carboxylic acid

HRID 1845306Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1845306
[C:1]([C:3]1[CH:8]=[C:7]([CH3:9])[CH:6]=[CH:5][C:4]=1[C:10]1[CH:15]=[C:14]([CH:16]([OH:21])[C:17]([F:20])([F:19])[F:18])[CH:13]=[C:12]([C:22]([O:24]C)=[O:23])[CH:11]=1)#[N:2].[OH-].[Li+].[NH4+].[Cl-].CCOC(C)=O>O1CCOCC1.O>[C:1]([C:3]1[CH:8]=[C:7]([CH3:9])[CH:6]=[CH:5][C:4]=1[C:10]1[CH:15]=[C:14]([CH:16]([OH:21])[C:17]([F:18])([F:20])[F:19])[CH:13]=[C:12]([C:22]([OH:24])=[O:23])[CH:11]=1)#[N:2]

Komponenten

7

Edukt 4

HCID 3939Lithium HydroxideHCID 8857Ethyl AcetateHCID 25517Ammonium ChlorideHCID 58188274Methyl 2'-cyano-4'-methyl-5-(2,2,2-trifluoro-1-hydroxyethyl)biphenyl-3-carboxylate

Produkt 1

HCID 581880842'-Cyano-4'-methyl-5-(2,2,2-trifluoro-1-hydroxyethyl)biphenyl-3-carboxylic acid

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 312751,4-DioxaneLösungsmittel

Versuchsvorschrift

To a stirred solution of methyl 2′-cyano-4′-methyl-5-(2,2,2-trifluoro-1-hydroxyethyl)biphenyl-3-carboxylate (250 mg, 0.72 mmol) in 1,4-dioxane (5 mL) and water (2.5 mL) was added lithium hydroxide (50 mg, 2.1 mmol). The reaction mixture was stirred at rt for 4 h, and then treated with aq. NH4Cl and EtOAc. The organic layer was separated, dried over anhydrous MgSO4, and concentrated. The residue was purified by silica gel chromatography to afford the title compound. 1H NMR (CDCl3, 400 MHz): 8.27 (s, 1H), 8.24 (s, 1H), 7.95 (s, 1H), 7.58 (s, 1H), 7.48 and 7.43 (AB, J=8.0 Hz, 2H), 5.17 (q, J=6.4 Hz, 1H), 2.43 (s, 3H).

Aufarbeitung

  1. customThe organic layer was separated
  2. dry with materialdried over anhydrous MgSO4
  3. concentrationconcentrated
  4. customThe residue was purified by silica gel chromatography

Quellen und Nachweise

ORD-Eintrag
ord-13bb4607081a42febc678ab476c0ab33
Quelldatensatz
uspto-grants-2015_02
Patentnummer
US08946439B2

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