Propargyl alcohol → 3-(5-Methyl-2-thienyl)-2-propyne-1-ol

HRID 1093394

Reaktionsgleichung

Reaktionsgleichung von HRID 1093394
I[C:2]1[S:3][C:4]([CH3:7])=[CH:5][CH:6]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[CH2:27]([OH:30])[C:28]#[CH:29].C(N(C(C)C)CC)(C)C>[Cu]I.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C(Cl)(Cl)Cl.[Pd].[Pd].O.O1CCCC1>[CH3:7][C:4]1[S:3][C:2]([C:29]#[C:28][CH2:27][OH:30])=[CH:6][CH:5]=1

Komponenten

9

Edukt 4

HCID 7859Propargyl alcoholHCID 11776TriphenylphosphineHCID 81531DiisopropylethylamineHCID 1400962-Iodo-5-methylthiophene

Produkt 1

HCID 594075163-(5-Methyl-2-thienyl)-2-propyne-1-ol

Reagenzien, Katalysatoren, Lösungsmittel 4

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)KatalysatorHCID 11029508Palladium, tris[mu-[(1,2-eta:4,5-eta)-(1E,4E)-1,5-diphenyl-1,4-pentadien-3-one]]di-, compd. with trichloromethane (1:1)KatalysatorHCID 962WaterLösungsmittelHCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

A mixture of 2-iodo-5-methylthiophene (5.00 g), copper(I) iodide (82 mg), triphenylphosphine (286 mg), tris(dibenzylideneacetone)dipalladium(0) chloroform adduct (445 mg), propargyl alcohol (1.91 ml), diisopropylethylamine (15.1 ml) and tetrahydrofuran (30 ml) was stirred at room temperature for 20 hr. The reaction mixture was added to water, and the mixture was extracted with ethyl acetate, washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (hexane:ethyl acetate=3:1-2:1) to give the object product (1.48 g) as a brown oil.

Aufarbeitung

  1. extractionthe mixture was extracted with ethyl acetate
  2. washwashed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. customThe solvent was evaporated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (hexane:ethyl acetate=3:1-2:1)

Quellen und Nachweise

ORD-Eintrag
ord-39f77001690a4a04b01060a72968ea12
Quelldatensatz
uspto-grants-2012_03
Patentnummer
US08129361B2

Verknüpfte Notizen

Wird geladen…