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3-Buten-2-ol → 4-(3,4-Dichlorophenyl)butan-2-one

HRID 1844420
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1844420
[Cl:1][C:2]1[CH:7]=[CH:6][C:5](I)=[CH:4][C:3]=1[Cl:9].[CH3:10][CH:11]([OH:14])[CH:12]=[CH2:13].C(=O)(O)[O-].[Na+]>[Cl-].C([N+](CCCC)(CCCC)CCCC)CCC.C([O-])(=O)C.[Pd+2].C([O-])(=O)C.CN(C=O)C>[Cl:9][C:3]1[CH:4]=[C:5]([CH2:13][CH2:12][C:11](=[O:14])[CH3:10])[CH:6]=[CH:7][C:2]=1[Cl:1]
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

7

Edukt 3

HCID 117163-Buten-2-olHCID 88591Benzene, 1,2-dichloro-4-iodo-HCID 516892Sodium Bicarbonate

Produkt 1

HCID 242613834-(3,4-Dichlorophenyl)butan-2-oneAusbeute 88 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 70681Tetrabutylammonium ChlorideKatalysator
HCID 167845
palladium(II) acetate
Katalysator
HCID 6228DimethylformamideLösungsmittel

Reaktionsbedingungen

Temperatur
60 °C

Versuchsvorschrift

A microwave vial was charged with palladium acetate (0.165 g, 0.733 mmol), 1,2-dichloro-4-iodobenzene (2.00 g, 7.33 mmol), but-3-en-2-ol (0.793 g, 11.0 mmol), tetrabutylammonium chloride, hydrate (2.17 g, 7.33 mmol), and sodium bicarbonate (1.539 g, 18.32 mmol). DMF (5 mL) was added via syringe and the reaction mixture was degassed three times. The mixture was heated at 60° C. overnight. The reaction mixture was allowed to cool to rt, diluted with ether and the organic layer was washed with water. The organic layer was separated, dried with MgSO4, filtered and concentrated. The crude residue was purified by silica gel chromatography with an eluent of 10% ethyl acetate/hexanes to afford the desired product Intermediate 29A (1.40 g, 6.45 mmol, 88% yield). LC-MS (ESI) m/z 216.9 (M+H), RT=2.01 min (Method B).

Aufarbeitung

  1. customthe reaction mixture was degassed three times
  2. temperatureto cool to rt
  3. additiondiluted with ether
  4. washthe organic layer was washed with water
  5. customThe organic layer was separated
  6. dry with materialdried with MgSO4
  7. filtrationfiltered
  8. concentrationconcentrated
  9. customThe crude residue was purified by silica gel chromatography with an eluent of 10% ethyl acetate/hexanes

Quellen und Nachweise

ORD-Eintrag
ord-e91c58eb0ae34b1ca467c452332732f7
Quelldatensatz
uspto-grants-2015_02
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08946430B2

Notizen zur Reaktion

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