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Potassium Carbonate → 6-Chloro-5-(4-(2-hydroxypropan-2-yl)phenyl)-1H-indazole-3-carboxylic acid

HRID 1054809
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1054809
Br[C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][C:10]=1[Cl:11])[NH:7][N:6]=[C:5]2[C:12]([OH:14])=[O:13].CC1(C)C(C)(C)OB([C:23]2[CH:28]=[CH:27][C:26]([C:29]([OH:32])([CH3:31])[CH3:30])=[CH:25][CH:24]=2)O1.C(=O)([O-])[O-].[K+].[K+]>C1(C)C=CC=CC=1.CCO.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[Cl:11][C:10]1[CH:9]=[C:8]2[C:4]([C:5]([C:12]([OH:14])=[O:13])=[N:6][NH:7]2)=[CH:3][C:2]=1[C:23]1[CH:28]=[CH:27][C:26]([C:29]([OH:32])([CH3:31])[CH3:30])=[CH:25][CH:24]=1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

7

Edukt 3

HCID 11430Potassium CarbonateHCID 591660132-(4-(Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propan-2-olHCID 866987915-bromo-6-chloro-1H-indazole-3-carboxylic acid

Produkt 1

HCID 866988016-Chloro-5-(4-(2-hydroxypropan-2-yl)phenyl)-1H-indazole-3-carboxylic acidAusbeute 35,3 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 44119782
Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)
Katalysator
HCID 702EthanolLösungsmittel
HCID 1140TolueneLösungsmittel

Versuchsvorschrift

To a mixture of 5-bromo-6-chloro-1H-indazole-3-carboxylic acid (100 mg, 0.36 mmol) and 2-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-propan-2-ol (114 mg, 0.44 mmol) in toluene (1.5 mL) and EtOH (1.5 mL) was added 2 N aqueous potassium carbonate solution (0.7 mL, 1.4 mmol). The reaction mixture was degassed with N2 for 10 minutes, treated with [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II) (15.0 mg, 0.018 mmol), and heated to reflux for 16 hours. After cooling to room temperature, the reaction was quenched with 1 N NaOH (1 mL). The mixture was stirred for 30 minutes, acidified with 1 N HCl to pH 5 and extracted with EtOAc. The organic layer was washed with brine, dried over Na2SO4 and concentrated in vacuo. The crude material was purified by reverse phase chromatography (Biotage C18 column, 0-40% MeCN/water) to give the title compound (42 mg, 35% yield) as a solid. MS (ES−) 329.1 (M−H)+. 1H NMR (400 MHz, CD3OD) δ 8.06 (s, 1H), 7.74 (s, 1H), 7.55 (d, J=8.20 Hz, 2H), 7.37 (d, J=8.20 Hz, 2H), 1.57 (s, 6H).

Aufarbeitung

  1. customThe reaction mixture was degassed with N2 for 10 minutes
  2. temperatureheated
  3. temperatureto reflux for 16 hours
  4. customthe reaction was quenched with 1 N NaOH (1 mL)
  5. extractionextracted with EtOAc
  6. washThe organic layer was washed with brine
  7. dry with materialdried over Na2SO4
  8. concentrationconcentrated in vacuo
  9. customThe crude material was purified by reverse phase chromatography (Biotage C18 column, 0-40% MeCN/water)

Quellen und Nachweise

ORD-Eintrag
ord-9233d9f7ca3d46b4bd020c9358334453
Quelldatensatz
uspto-grants-2016_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US09394285B2

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