Hydrochloric Acid → 2-Methyl-4-(5-(3,4,5-trichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol-3-yl)benzoic acid

HRID 1037016Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1037016
[Cl:1][C:2]1[CH:3]=[C:4]([C:10]2([C:26]([F:29])([F:28])[F:27])[O:14][N:13]=[C:12]([C:15]3[CH:24]=[CH:23][C:18]([C:19]([O:21]C)=[O:20])=[C:17]([CH3:25])[CH:16]=3)[CH2:11]2)[CH:5]=[C:6]([Cl:9])[C:7]=1[Cl:8].[OH-].[Na+].Cl>C1COCC1.O.CO>[Cl:1][C:2]1[CH:3]=[C:4]([C:10]2([C:26]([F:28])([F:29])[F:27])[O:14][N:13]=[C:12]([C:15]3[CH:24]=[CH:23][C:18]([C:19]([OH:21])=[O:20])=[C:17]([CH3:25])[CH:16]=3)[CH2:11]2)[CH:5]=[C:6]([Cl:9])[C:7]=1[Cl:8]

Komponenten

5

Edukt 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 86685464Methyl 4-(5-(3,4,5-trichlorophenyl)-5-(trifluoromethyl)-4,5-dihydro-isoxazol-3-yl)-2-methylbenzoate

Produkt 1

HCID 866854502-Methyl-4-(5-(3,4,5-trichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol-3-yl)benzoic acidAusbeute 95,4 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 21892291Methanol tetrahydrofuran waterLösungsmittel

Versuchsvorschrift

A mixture of methyl 4-(5-(3,4,5-trichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol-3-yl)-2-methylbenzoate (4.1 g, 8.8 mmol) and NaOH (3.5 g, 88 mmol) in THF—H2O-MeOH (1:1:1, 90 mL) was stirred at rt for 18 h. The mixture was acidified with 2 N HCl and extracted with ethyl acetate (50 mL×3). The combined organic layers were washed with brine, dried over Na2SO4, filtered and concentrated under reduced pressure to give 4-(5-(3,4,5-trichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol-3-yl)-2-methylbenzoic acid (3.8 g; yield 95%) as a white solid. MS: m/z=451.7 (M+1, ESI+).

Aufarbeitung

  1. extractionextracted with ethyl acetate (50 mL×3)
  2. washThe combined organic layers were washed with brine
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-a28226251a634f2b81fb930e50778462
Quelldatensatz
uspto-grants-2013_10
Patentnummer
US08546357B2

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