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Sodium Hydroxide → {5-tert-Butyl-2-[3-((S)-2-hydroxy-1-methyl-ethoxy)-phenyl]-2H-pyrazol-3-yl}-carbamic acid 2,2,2-trichloro-ethyl ester

HRID 630967
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 630967
[NH2:1][C:2]1[N:6]([C:7]2[CH:8]=[C:9]([CH:15]=[CH:16][CH:17]=2)[O:10][C@@H:11]([CH3:14])[CH2:12][OH:13])[N:5]=[C:4]([C:18]([CH3:21])([CH3:20])[CH3:19])[CH:3]=1.[OH-].[Na+].Cl[C:25]([O:27][CH2:28][C:29]([Cl:32])([Cl:31])[Cl:30])=[O:26]>CCOC(C)=O.O>[Cl:30][C:29]([Cl:32])([Cl:31])[CH2:28][O:27][C:25](=[O:26])[NH:1][C:2]1[N:6]([C:7]2[CH:17]=[CH:16][CH:15]=[C:9]([O:10][C@@H:11]([CH3:14])[CH2:12][OH:13])[CH:8]=2)[N:5]=[C:4]([C:18]([CH3:20])([CH3:19])[CH3:21])[CH:3]=1
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Komponenten

6

Edukt 3

HCID 14798Sodium HydroxideHCID 870632,2,2-Trichloroethyl chloroformate2×HCID 86687279HCID 86687279, Verbindung

Produkt 1

HCID 86687280{5-tert-Butyl-2-[3-((S)-2-hydroxy-1-methyl-ethoxy)-phenyl]-2H-pyrazol-3-yl}-carbamic acid 2,2,2-trichloro-ethyl esterAusbeute 108,5 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962
Water
Lösungsmittel
HCID 8857Ethyl AcetateLösungsmittel2×

Versuchsvorschrift

A solution of Intermediate 152b (69 mg, 0.24 mmol) in EtOAc (1.2 mL) was treated with aqueous 1N NaOH (0.4 mL, 0.43 mmol) then 2,2,2-trichloroethyl chloroformate (0.034 mL, 0.25 mmol) and the mixture was stirred at RT for 2.5 h. The mixture was treated with another portion of 2,2,2-trichloroethyl chloroformate (0.010 mL, 0.07 mmol) and stirred at RT for a further 0.75 h. The mixture was diluted with EtOAc and water and the phases were separated. The aqueous layer was extracted with EtOAc (×2) and the combined organic phase was washed with brine, dried (Na2SO4), and concentrated in vacuo to give a pale red gum (121 mg). The gum was purified by FCC, using 0-40% EtOAc in cyclohexane, to give the title compound as a pale golden gum (62 mg, 56%). LCMS (Method 3): Rt 4.15 min, m/z 464.2, 466.2 [MH+].

Aufarbeitung

  1. customthe phases were separated
  2. extractionThe aqueous layer was extracted with EtOAc (×2)
  3. washthe combined organic phase was washed with brine
  4. dry with materialdried (Na2SO4)
  5. concentrationconcentrated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-ba1159be34a64b4190375e2422a556ed
Quelldatensatz
uspto-grants-2016_04
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US09315503B2

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