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Chloroacetone → 1-(4-{1-[3-(Trifluoromethyl)-7,8-dihydro[1,2,4]triazolo[4,3-b]pyridazin-6-yl]piperidin-4-yl}phenoxy)propan-2-one

HRID 2381146
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 2381146
C(=O)([O-])[O-].[K+].[K+].[F:7][C:8]([F:32])([F:31])[C:9]1[N:13]2[N:14]=[C:15]([N:18]3[CH2:23][CH2:22][CH:21]([C:24]4[CH:29]=[CH:28][C:27]([OH:30])=[CH:26][CH:25]=4)[CH2:20][CH2:19]3)[CH2:16][CH2:17][C:12]2=[N:11][N:10]=1.Cl[CH2:34][C:35](=[O:37])[CH3:36]>CC(N(C)C)=O>[F:32][C:8]([F:7])([F:31])[C:9]1[N:13]2[N:14]=[C:15]([N:18]3[CH2:23][CH2:22][CH:21]([C:24]4[CH:25]=[CH:26][C:27]([O:30][CH2:34][C:35](=[O:37])[CH3:36])=[CH:28][CH:29]=4)[CH2:20][CH2:19]3)[CH2:16][CH2:17][C:12]2=[N:11][N:10]=1
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Komponenten

5

Edukt 3

HCID 6571ChloroacetoneHCID 11430Potassium CarbonateHCID 685004304-{1-[3-(Trifluoromethyl)-7,8-dihydro[1,2,4]triazolo[4,3-b]pyridazin-6-yl]piperidin-4-yl}phenol

Produkt 1

HCID 684994251-(4-{1-[3-(Trifluoromethyl)-7,8-dihydro[1,2,4]triazolo[4,3-b]pyridazin-6-yl]piperidin-4-yl}phenoxy)propan-2-oneAusbeute 96,4 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 31374
Dimethylacetamide
Lösungsmittel

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

Potassium carbonate (1.214 g, 8.79 mmol) was added to 4-{1-[3-(trifluoromethyl)-7,8-dihydro[1,2,4]triazolo[4,3-b]pyridazin-6-yl]piperidin-4-yl}phenol (obtained as described in Example 46, preparation of starting materials) (1.07 g, 2.93 mmol) and 1-chloropropan-2-one (0.466 mL, 5.86 mmol) in DMA (10 mL). The resulting mixture was stirred at 100° C. for 2 hours. The reaction mixture was cooled to room temperature, concentrated and diluted with water (25 mL) then extracted with DCM (2×25 mL). The organic layer was dried over MgSO4, filtered and evaporated to afford crude product. The crude product was purified by flash silica chromatography, elution gradient 50 to 100% EtOAc in isohexane. Pure fractions were evaporated to dryness to afford 1-(4-{1-[3-(trifluoromethyl)-7,8-dihydro[1,2,4]triazolo[4,3-b]pyridazin-6-yl]piperidin-4-yl}phenoxy)propan-2-one (1.190 g, 96%) as a gum.

Aufarbeitung

  1. temperatureThe reaction mixture was cooled to room temperature
  2. concentrationconcentrated
  3. additiondiluted with water (25 mL)
  4. extractionthen extracted with DCM (2×25 mL)
  5. dry with materialThe organic layer was dried over MgSO4
  6. filtrationfiltered
  7. customevaporated
  8. customto afford crude product
  9. customThe crude product was purified by flash silica chromatography, elution gradient 50 to 100% EtOAc in isohexane
  10. customPure fractions were evaporated to dryness

Quellen und Nachweise

ORD-Eintrag
ord-f2f1b38ca12346d182bda33bcd90716c
Quelldatensatz
uspto-grants-2012_09
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08258140B2

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