Tributylvinyltin → HCID 68005405, Verbindung

HRID 450493Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 450493
Br[C:2]1[CH:12]=[CH:11][C:5]([C:6]([O:8][CH2:9][CH3:10])=[O:7])=[C:4]([Cl:13])[CH:3]=1.[CH2:14]([Sn](CCCC)(CCCC)C=C)[CH2:15]CC>CN(C=O)C.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Cl:13][C:4]1[CH:3]=[C:2]([CH:14]=[CH2:15])[CH:12]=[CH:11][C:5]=1[C:6]([O:8][CH2:9][CH3:10])=[O:7]

Komponenten

6

Edukt 2

HCID 81998TributylvinyltinHCID 22032236Ethyl 4-bromo-2-chlorobenzoate

Produkt 1

HCID 68005405HCID 68005405, VerbindungAusbeute 102,7 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 178418397HCID 178418397, VerbindungKatalysatorHCID 962WaterLösungsmittelHCID 6228DimethylformamideLösungsmittel

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

A mixture of ethyl 4-bromo-2-chlorobenzoate (1.00 g, 3.79 mmol), tributyl(vinyl)tin (2.41 g, 7.59 mmol) and tetrakis(triphenylphosphine)palladium (0) (439 mg, 0.38 mmol) in DMF (15 mL) was stirred at 100° C. for 1 hr. After cooling, the mixture was diluted with water (150 mL), and extracted twice with ethyl acetate. The extracts were combined, washed with brine, dried over magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluent, hexane:ethyl acetate=20:1) to give the title compound (820 mg, 100%) as a colorless oil.

Aufarbeitung

  1. temperatureAfter cooling
  2. extractionextracted twice with ethyl acetate
  3. washwashed with brine
  4. dry with materialdried over magnesium sulfate
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by silica gel column chromatography (eluent, hexane:ethyl acetate=20:1)

Quellen und Nachweise

ORD-Eintrag
ord-d9ad8592eec44fd99093df65779b0a66
Quelldatensatz
uspto-grants-2013_07
Patentnummer
US08486965B2

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