Hydrochloric Acid → 2-[5-(4-Chloro-phenyl)-1-(2,4-dichloro-phenyl)-4-methyl-1H-pyrazol-3-ylmethoxy]-2-methyl-propionic acid

HRID 526699Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 526699
C([O:3][C:4](=[O:31])[C:5]([O:8][CH2:9][C:10]1[C:14]([CH3:15])=[C:13]([C:16]2[CH:21]=[CH:20][C:19]([Cl:22])=[CH:18][CH:17]=2)[N:12]([C:23]2[CH:28]=[CH:27][C:26]([Cl:29])=[CH:25][C:24]=2[Cl:30])[N:11]=1)([CH3:7])[CH3:6])C.[Li+].[OH-].Cl>C1COCC1.O>[Cl:22][C:19]1[CH:18]=[CH:17][C:16]([C:13]2[N:12]([C:23]3[CH:28]=[CH:27][C:26]([Cl:29])=[CH:25][C:24]=3[Cl:30])[N:11]=[C:10]([CH2:9][O:8][C:5]([CH3:6])([CH3:7])[C:4]([OH:31])=[O:3])[C:14]=2[CH3:15])=[CH:21][CH:20]=1

Komponenten

6

Edukt 3

HCID 313Hydrochloric AcidHCID 3939Lithium HydroxideHCID 899072292-[5-(4-Chloro-phenyl)-1-(2,4-dichloro-phenyl)-4-methyl-1H-pyrazol-3-ylmethoxy]-2-methyl-propionic acid ethyl ester

Produkt 1

HCID 899079182-[5-(4-Chloro-phenyl)-1-(2,4-dichloro-phenyl)-4-methyl-1H-pyrazol-3-ylmethoxy]-2-methyl-propionic acid

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To a solution of 735 mg of 2-[5-(4-Chloro-phenyl)-1-(2,4-dichloro-phenyl)-4-methyl-1H-pyrazol-3-ylmethoxy]-2-methyl-propionic acid ethyl ester in 10 ml THF was added a solution of 51 mg of LiOH in 1 ml water at room temperature. After 16 h the mixture was brought to pH 2 by addition of 1 M hydrochloric acid. The reaction mixture was concentrated under reduced pressure and the aqueous layer was extracted with dichloromethane. The combined organic phases were dried over MgSO4 and the solvents were removed under reduced pressure. The residue was purified by preparative HPLC (C18 reverse phase column, elution with a water/MeCN gradient with 0.1% TFA). The fractions containing the product were evaporated and lyophilized to yield a white solid. Yield: 677 mg.

Aufarbeitung

  1. concentrationThe reaction mixture was concentrated under reduced pressure
  2. extractionthe aqueous layer was extracted with dichloromethane
  3. dry with materialThe combined organic phases were dried over MgSO4
  4. customthe solvents were removed under reduced pressure
  5. customThe residue was purified by preparative HPLC (
  6. washC18 reverse phase column, elution with a water/MeCN gradient with 0.1% TFA)
  7. additionThe fractions containing the product
  8. customwere evaporated
  9. customto yield a white solid

Quellen und Nachweise

ORD-Eintrag
ord-38dbb8a46f0c44ce9d4f996f66de64ba
Quelldatensatz
uspto-grants-2016_05
Patentnummer
US09346762B2

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