2-Bromoanisole → HCID 11558102, Verbindung

HRID 1107083Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1107083
[Li]CCCC.Br[C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][C:8]=1[O:13][CH3:14].[CH3:15][Sn:16](Cl)([CH3:18])[CH3:17]>C(OCC)C>[CH3:15][Sn:16]([CH3:18])([CH3:17])[C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][C:8]=1[O:13][CH3:14]

Komponenten

5

Edukt 3

HCID 113582-BromoanisoleHCID 14016Trimethyltin chlorideHCID 178418339Butyllithium

Produkt 1

HCID 11558102HCID 11558102, VerbindungAusbeute 76,6 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 3283Diethyl EtherLösungsmittel2×

Versuchsvorschrift

To a stirring solution of n-BuLi (2.6 mL, 2.5M in hexane, 6.42 mmol) in diethyl ether (2.5 mL) at -78° C. was added 2-bromoanisole (1.0 g, 5.35 mmol) in diethyl ether (2 mL) dropwise. After stirring for 1h at -78° C., trimethyltin chloride (6.4 mL, 1.0M in THF, 6.42 mmol) was added dropwise. The mixture was allowed to stir an additional 2h while slowly warming to room temperature. The mixture was then washed with saturated aqueous NaHCO3. The aqueous layer was extracted with diethyl ether (1×50 mL) and the organic layers were combined, dried (MgSO4), filtered and concentrated. The residue was purified by column chromatography (silica gel, hexane) to yield the title compound as a colorless oil (1.11 g, 76%). 1HNMR (400 MHz, CDCl3) δ7.47 (d, 1H), 7.40 (t, 1H), 7.05 (t, 1H), 6.90 (d, 1H), 3.36 (s, 3H), 0.34 (s, 9H).

Aufarbeitung

  1. washThe mixture was then washed with saturated aqueous NaHCO3
  2. extractionThe aqueous layer was extracted with diethyl ether (1×50 mL)
  3. dry with materialdried (MgSO4)
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue was purified by column chromatography (silica gel, hexane)

Quellen und Nachweise

ORD-Eintrag
ord-979b4a2c437f43bfaf62d715044ebc22
Quelldatensatz
uspto-grants-2000_05
Patentnummer
US06057362

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