Dichloromethane → 4-(4'-Difluoromethoxy-biphenyl-4-ylsulphanylmethyl)-5-methyl-furan-2-carboxylic acid methyl ester

HRID 460097Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 460097
ClCCl.[CH3:4][O:5][C:6]([C:8]1[O:9][C:10]([CH3:30])=[C:11]([CH2:13][S:14][C:15]2[CH:20]=[CH:19][C:18](B3OC(C)(C)C(C)(C)O3)=[CH:17][CH:16]=2)[CH:12]=1)=[O:7].[F:31][CH:32]([F:41])[O:33][C:34]1[CH:39]=[CH:38][C:37](I)=[CH:36][CH:35]=1.C(=O)([O-])[O-].[Cs+].[Cs+]>O1CCOCC1>[CH3:4][O:5][C:6]([C:8]1[O:9][C:10]([CH3:30])=[C:11]([CH2:13][S:14][C:15]2[CH:16]=[CH:17][C:18]([C:37]3[CH:38]=[CH:39][C:34]([O:33][CH:32]([F:41])[F:31])=[CH:35][CH:36]=3)=[CH:19][CH:20]=2)[CH:12]=1)=[O:7]

Komponenten

6

Edukt 4

HCID 6344DichloromethaneHCID 10796Cesium carbonateHCID 27370081-(Difluoromethoxy)-4-iodobenzeneHCID 588241845-Methyl-4-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenylsulphanylmethyl]-furan-2-carboxylic acid methyl ester

Produkt 1

HCID 588241974-(4'-Difluoromethoxy-biphenyl-4-ylsulphanylmethyl)-5-methyl-furan-2-carboxylic acid methyl esterAusbeute 60,4 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 312751,4-DioxaneLösungsmittel

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

[1,1′-Bis(diphenylphosphino) ferrocene]dichloropalladium(II) complex with dichloromethane (1:1) (12.8 mg) was added to a degassed mixture of 5-methyl-4-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenylsulphanylmethyl]-furan-2-carboxylic acid methyl ester (151) (200 mg, 0.516 mmoles), 1-difluoromethoxy-4-iodo-benzene (153 mg, 0.568 mmoles) and 2M aqueous cesium carbonate (4.12 ml) in 1,4-dioxan (15 ml). The mixture was placed under an argon atmosphere and was heated at 100° C. for 20 hours. After cooling, the mixture was concentrated and the residue was partitioned between ethyl acetate and water, and the mixture adjusted to pH=2 with 1M aqueous hydrochloric acid. The organic phase was washed with brine and dried. After evaporation of the solvent, the residue was purified by flash chromatography, using heptane/ethyl acetate 9:1v/v as eluent, to afford compound 152(126 mg) as a white solid. LC/MS System A; Rt=4.17 mins.

Aufarbeitung

  1. temperatureAfter cooling
  2. concentrationthe mixture was concentrated
  3. customthe residue was partitioned between ethyl acetate and water
  4. washThe organic phase was washed with brine
  5. customdried
  6. customAfter evaporation of the solvent
  7. customthe residue was purified by flash chromatography

Quellen und Nachweise

ORD-Eintrag
ord-998d2f1d835c461f8d0b8d1f05de0a33
Quelldatensatz
uspto-grants-2007_03
Patentnummer
US07196089B2

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