Cesium carbonate → HCID 86684473, Verbindung

HRID 592988Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 592988
[NH2:1][C:2]1[N:7]=[CH:6][C:5]([C:8]([N:10]2[CH2:15][CH2:14][O:13][CH2:12][C@H:11]2[CH3:16])=[O:9])=[CH:4][CH:3]=1.Br[C:18]1[C:19](=[O:26])[N:20]([CH3:25])[N:21]=[C:22]([Cl:24])[CH:23]=1.C(=O)([O-])[O-].[Cs+].[Cs+].CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2>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].O1CCOCC1>[Cl:24][C:22]1[CH:23]=[C:18]([NH:1][C:2]2[CH:3]=[CH:4][C:5]([C:8]([N:10]3[CH2:15][CH2:14][O:13][CH2:12][C@H:11]3[CH3:16])=[O:9])=[CH:6][N:7]=2)[C:19](=[O:26])[N:20]([CH3:25])[N:21]=1

Komponenten

7

Edukt 4

HCID 10796Cesium carbonateHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 592164744-Bromo-6-chloro-2-methyl-2,3-dihydropyridazin-3-oneHCID 86683985(R)-(6-Aminopyridin-3-yl)(3-methylmorpholino)methanone

Produkt 1

HCID 86684473HCID 86684473, VerbindungAusbeute 79 %

Reagenzien, Katalysatoren, Lösungsmittel 2

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

Versuchsvorschrift

A 100-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser was charged with 1,4-dioxane (50 mL), 248a (330 mg, 1.5 mmol), 4-bromo-6-chloro-2-methylpyridazin-3(2H)-one (446 mg, 2.0 mmol), cesium carbonate (978 mg, 3.0 mmol), Xantphos (88 mg, 0.15 mmol), and tris(dibenzylideneacetone)dipalladium(0) (68 mg, 0.075 mmol). The system was subjected to three cycles of vacuum/argon flush and heated at reflux for 4 h. It was then cooled to room temperature and filtered. The solid was washed with dichloromethane (3×30 mL) and the combined filtrate was concentrated under reduced pressure. The residue was purified by silica-gel column chromatography eluting with petroleum ether/ethyl acetate (2:1 to 1:2) to afford 248b (430 mg, 79%) as yellow solid. MS-ESI: [M+H]+ 364.3

Aufarbeitung

  1. customA 100-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser
  2. customflush
  3. temperatureheated
  4. temperatureat reflux for 4 h
  5. filtrationfiltered
  6. washThe solid was washed with dichloromethane (3×30 mL)
  7. concentrationthe combined filtrate was concentrated under reduced pressure
  8. customThe residue was purified by silica-gel column chromatography
  9. washeluting with petroleum ether/ethyl acetate (2:1 to 1:2)

Quellen und Nachweise

ORD-Eintrag
ord-993b92adea3a4cd88c7ab675c8eaecb0
Quelldatensatz
uspto-grants-2016_01
Patentnummer
US09238655B2

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