3-Bromoaniline → HCID 66864920, Verbindung

HRID 240175Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 240175
[O:1]1[C:10]2[C:5](=[CH:6][C:7](B3OC(C)(C)C(C)(C)O3)=[CH:8][CH:9]=2)[C:4](=[O:20])[CH:3]=[CH:2]1.Br[C:22]1[CH:23]=[C:24]([CH:26]=[CH:27][CH:28]=1)[NH2:25].[O-]P([O-])([O-])=O.[K+].[K+].[K+].C1(P(C2CCCCC2)C2CCCCC2)CCCCC1>O1CCOCC1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[O:20]=[C:4]1[C:5]2[C:10](=[CH:9][CH:8]=[C:7]([C:22]3[CH:23]=[C:24]([NH2:25])[CH:26]=[CH:27][CH:28]=3)[CH:6]=2)[O:1][CH:2]=[CH:3]1

Komponenten

7

Edukt 4

HCID 115623-BromoanilineHCID 62657Potassium Phosphate, TribasicHCID 75806TricyclohexylphosphineHCID 5018676CHROMONE-6-BORONIC ACID PINACOL ESTER

Produkt 1

HCID 66864920HCID 66864920, VerbindungAusbeute 43 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 9811564Bis(dibenzylideneacetone)palladiumKatalysatorHCID 312751,4-DioxaneLösungsmittel

Versuchsvorschrift

Chromone-6-boronic acid pinacol ester (0.237 g, 0.872 mmol) and 3-bromoaniline (0.063 mL, 0.581 mmol) were combined in dioxane (2 mL) in a flame-dried, round-bottom flask. K3PO4 (1.27M, 0.778 mL, 0.99 mmol), PCy3 (0.004 g, 0.014 mmol), and Pd2(dba)3 (0.005 g, 0.006 mmol) were added to the stirred solution. The reaction was refluxed overnight under argon flow, and subsequently cooled to room temperature. The solvent was removed under vacuum and the resulting residue was resuspended in CH2Cl2. The organic phase was dried over MgSO4, filtered, and concentrated under vacuum. The crude product was purified by flash silica column chromatography (0-100% EtOAc/hexanes). The purification was monitored by TLC. The solvent was removed under vacuum from fractions containing product, resulting in 0.059 g in 43% yield.

Aufarbeitung

  1. temperatureThe reaction was refluxed overnight under argon flow
  2. customThe solvent was removed under vacuum
  3. dry with materialThe organic phase was dried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated under vacuum
  6. customThe crude product was purified by flash silica column chromatography (0-100% EtOAc/hexanes)
  7. customThe purification
  8. customThe solvent was removed under vacuum from fractions
  9. additioncontaining product
  10. customresulting in 0.059 g in 43% yield

Quellen und Nachweise

ORD-Eintrag
ord-eef3f64f53f74913b4d458f84b8e7da8
Quelldatensatz
uspto-grants-2014_02
Patentnummer
US08642788B2

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