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Ethyl Acetate → (e)-3-(4-Iodophenyl)-3-(3-trifluoromethylphenyl)prop-2-en-1-ol

HRID 1039482
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1039482
C[O-].[Na+].[H-].[Al+3].[Li+].[H-].[H-].[H-].[F:10][C:11]([F:23])([F:22])[C:12]1[CH:13]=[C:14]([C:18]#[C:19][CH2:20][OH:21])[CH:15]=[CH:16][CH:17]=1.C(OCC)(=O)C.[I:30][C:31]1[CH:36]=[CH:35][C:34](I)=[CH:33][CH:32]=1.O1C=CC=C1P(C1OC=CC=1)C1OC=CC=1>O1CCCC1.[Cl-].[Zn+2].[Cl-]>[I:30][C:31]1[CH:36]=[CH:35][C:34](/[C:18](/[C:14]2[CH:15]=[CH:16][CH:17]=[C:12]([C:11]([F:22])([F:23])[F:10])[CH:13]=2)=[CH:19]\[CH2:20][OH:21])=[CH:33][CH:32]=1
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

9

Edukt 6

HCID 8857Ethyl AcetateHCID 12208p-DiiodobenzeneHCID 521585Tris(furan-2-yl)phosphaneHCID 10942334Sodium MethoxideHCID 21226445Aluminium lithium hydrideHCID 227309473-(3-(Trifluoromethyl)phenyl)prop-2-yn-1-ol

Produkt 1

HCID 19261273
(e)-3-(4-Iodophenyl)-3-(3-trifluoromethylphenyl)prop-2-en-1-ol

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 3007855ZincchlorideKatalysatorHCID 8028TetrahydrofuranLösungsmittel3×

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

Sodium methoxide (90 mg, 1.67 mmol) was added to 1M solution of lithium aluminum hydride in tetrahydrofuran (33 mL, 33 mmol) under argon. The mixture was cooled to 0° C. and a solution of the above alcohol (6.7 g, 33.5 mmol) in tetrahydrofuran (25 mL) was added over 10 min. The reaction was stirred at 0° C. for 3 h; dry ethyl acetate (10 mL, 103 mmol) was added and the whole mixture was stirred at ambient temperature for 15 min. A degassed solution of 1,4-diiodobenzene (13.25 g, 40.1 mmol) in dry tetrahydrofuran (25 mL), anhydrous zinc chloride (2.73 g, 20.0 mmol), tris(dibenzylideneacetone)dipalladium chloroform complex (0.692 g, 0.66 mmol), and tri(2-furyl)phosphine (0.854 g, 3.6 mmol) were added; the mixture was degassed and then was heated at 60° C. for 15 h under argon. The suspension was cooled down; methanol (16 mL) was added and the mixture was stirred for additional 1 h. The reaction was diluted with ether (350 mL) and saturated aqueous solution of ammonium chloride (9 mL) was added. The mixture was filtered through a paddle of silica gel and the paddle was thoroughly washed with ether (100 mL). The solvents were evaporated in vacuo and the residue was purified by flash column chromatography (silica gel Fluka 60, hexanes/ethyl acetate 5:1) affording (E)-3-(4-iodophenyl)-3-(3-trifluoromethylphenyl)prop-2-en-1-ol as solidifying oil.

Aufarbeitung

  1. stirringthe whole mixture was stirred at ambient temperature for 15 min
  2. customthe mixture was degassed
  3. temperaturewas heated at 60° C. for 15 h under argon
  4. temperatureThe suspension was cooled down
  5. additionmethanol (16 mL) was added
  6. stirringthe mixture was stirred for additional 1 h
  7. additionThe reaction was diluted with ether (350 mL) and saturated aqueous solution of ammonium chloride (9 mL)
  8. additionwas added
  9. filtrationThe mixture was filtered through a paddle of silica gel
  10. washthe paddle was thoroughly washed with ether (100 mL)
  11. customThe solvents were evaporated in vacuo
  12. customthe residue was purified by flash column chromatography (silica gel Fluka 60, hexanes/ethyl acetate 5:1)

Quellen und Nachweise

ORD-Eintrag
ord-495b8f2ee54f4bb086f6139338932708
Quelldatensatz
uspto-grants-2013_10
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08551993B2

Notizen zur Reaktion

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