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Dichloromethane → 5-Methyl-4-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenylsulphanylmethyl]-furan-2-carboxylic acid methyl ester

HRID 460096
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 460096
ClCCl.[CH3:4][C:5]1([CH3:12])[C:9]([CH3:11])([CH3:10])[O:8][BH:7][O:6]1.[CH3:13][O:14][C:15]([C:17]1[O:18][C:19]([CH3:31])=[C:20]([CH2:22][S:23][C:24]2[CH:29]=[CH:28][C:27](Br)=[CH:26][CH:25]=2)[CH:21]=1)=[O:16]>O1CCCC1.O1CCOCC1>[CH3:13][O:14][C:15]([C:17]1[O:18][C:19]([CH3:31])=[C:20]([CH2:22][S:23][C:24]2[CH:29]=[CH:28][C:27]([B:7]3[O:8][C:9]([CH3:11])([CH3:10])[C:5]([CH3:12])([CH3:4])[O:6]3)=[CH:26][CH:25]=2)[CH:21]=1)=[O:16]
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Komponenten

6

Edukt 3

HCID 6344DichloromethaneHCID 27347684,4,5,5-Tetramethyl[1,3,2]dioxaborolaneHCID 588241724-(4-Bromo-phenylsulphanylmethyl)-5-methyl-furan-2-carboxylic acid methyl ester

Produkt 1

HCID 588241845-Methyl-4-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenylsulphanylmethyl]-furan-2-carboxylic acid methyl ester

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8028
Tetrahydrofuran
Lösungsmittel
HCID 312751,4-DioxaneLösungsmittel

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

[1,1′-Bis(diphenylphosphino)ferrocene]dichloropalladium(II) complex with dichloromethane (1:1) (30 mg) and 4,4,5,5-tetramethyl-[1,3,2]dioxaborolane (2.34 ml of a 1M solution in tetrahydrofuran) were added to a degassed solution of 4-(4-bromo-phenylsulphanylmethyl)-5-methyl-furan-2-carboxylic acid methyl ester (150) (400 mg, 1.17 mmoles) in 1,4-dioxan (120 ml). The mixture was heated at 100° C., under an argon atmosphere, for 20 hours, cooled and evaporated. The residue was partitioned between ethyl acetate and water, and the organic phase washed with brine and dried (MgSO4). After evaporation of the solvent the residue was purified by by flash chromatography, using heptane/ethyl acetate 9:1v/v as eluent, to afford compound 151(212 mg) as a colourless oil.

Aufarbeitung

  1. temperaturecooled
  2. customevaporated
  3. customThe residue was partitioned between ethyl acetate and water
  4. washthe organic phase washed with brine
  5. dry with materialdried (MgSO4)
  6. customAfter evaporation of the solvent the residue
  7. customwas purified by by flash chromatography

Quellen und Nachweise

ORD-Eintrag
ord-3b046694638e47d6b9452992e4ef3b04
Quelldatensatz
uspto-grants-2007_03
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07196089B2

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