Cesium carbonate → Methyl 2-(6-(tert-butoxycarbonylamino)-5-fluoropyridin-3-yloxy)-4-fluorobenzoate

HRID 624400Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 624400
Cl[C:2]1[N:7]=[CH:6][C:5]([O:8][C:9]2[CH:18]=[C:17]([F:19])[CH:16]=[CH:15][C:10]=2[C:11]([O:13][CH3:14])=[O:12])=[CH:4][C:3]=1[F:20].[C:21](=[O:28])([O:23][C:24]([CH3:27])([CH3:26])[CH3:25])[NH2:22].C(=O)([O-])[O-].[Cs+].[Cs+].CC1(C)C2C=CC=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=2OC2C1=CC=CC=2P(C1C=CC=CC=1)C1C=CC=CC=1>C(O[Pd]OC(=O)C)(=O)C.O1CCOCC1>[C:24]([O:23][C:21]([NH:22][C:2]1[N:7]=[CH:6][C:5]([O:8][C:9]2[CH:18]=[C:17]([F:19])[CH:16]=[CH:15][C:10]=2[C:11]([O:13][CH3:14])=[O:12])=[CH:4][C:3]=1[F:20])=[O:28])([CH3:27])([CH3:26])[CH3:25]

Komponenten

7

Edukt 4

HCID 10796Cesium carbonateHCID 77922tert-Butyl carbamateHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 86642876Methyl 2-(6-chloro-5-fluoropyridin-3-yloxy)-4-fluorobenzoate

Produkt 1

HCID 67226334Methyl 2-(6-(tert-butoxycarbonylamino)-5-fluoropyridin-3-yloxy)-4-fluorobenzoate

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 167845palladium(II) acetateKatalysatorHCID 312751,4-DioxaneLösungsmittel

Reaktionsbedingungen

Temperatur
85 °C

Versuchsvorschrift

Methyl 2-(6-chloro-5-fluoropyridin-3-yloxy)-4-fluorobenzoate (0.875 g), tert-butyl carbamate (0.410 g), cesium carbonate (1.427 g), diacetoxypalladium (0.033 g) and (9,9-dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine) (0.169 g) were added to dioxane (10 mL). The reaction was degassed with nitrogen then sealed. The reaction was then heated to 85° C. After stirring for 16 hours the reaction was cooled, diluted with water (25 mL) and the product was extracted into dichloromethane (2×25 mL). The organic layer was dried over magnesium sulfate, filtered, and concentrated. Silica gel chromatography (GraceResolv 40 g) eluting with a gradient of 5% to 25% ethyl acetate/hexanes gave the title compound.

Aufarbeitung

  1. customThe reaction was degassed with nitrogen
  2. customthen sealed
  3. temperaturewas cooled
  4. additiondiluted with water (25 mL)
  5. extractionthe product was extracted into dichloromethane (2×25 mL)
  6. dry with materialThe organic layer was dried over magnesium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated
  9. washSilica gel chromatography (GraceResolv 40 g) eluting with a gradient of 5% to 25% ethyl acetate/hexanes

Quellen und Nachweise

ORD-Eintrag
ord-64b76816db30438a8b811d8a4b9c3a20
Quelldatensatz
uspto-grants-2016_04
Patentnummer
US09303025B2

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