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Hydrochloric Acid → 4-[5-(methylsulfanyl)pyridin-2-yl]-5-(tetrahydro-2H-pyran-4-yl)pent-1-en-3-one

HRID 1881918
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1881918
CON(C)[C:4](=[O:21])[CH:5]([C:13]1[CH:18]=[CH:17][C:16]([S:19][CH3:20])=[CH:15][N:14]=1)[CH2:6][CH:7]1[CH2:12][CH2:11][O:10][CH2:9][CH2:8]1.[CH:23]([Mg]Br)=[CH2:24].Cl>O1CCCC1>[CH3:20][S:19][C:16]1[CH:17]=[CH:18][C:13]([CH:5]([CH2:6][CH:7]2[CH2:8][CH2:9][O:10][CH2:11][CH2:12]2)[C:4](=[O:21])[CH:23]=[CH2:24])=[N:14][CH:15]=1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

5

Edukt 3

HCID 313Hydrochloric AcidHCID 86641954N-methoxy-N-methyl-2-[5-(methylsulfanyl)pyridin-2-yl]-3-(tetrahydro-2H-pyran-4-yl)propanamideHCID 178418507HCID 178418507, Verbindung

Produkt 1

HCID 593313384-[5-(methylsulfanyl)pyridin-2-yl]-5-(tetrahydro-2H-pyran-4-yl)pent-1-en-3-oneAusbeute 46 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028
Tetrahydrofuran
Lösungsmittel

Versuchsvorschrift

A solution of N-methoxy-N-methyl-2-[5-(methylsulfanyl)pyridin-2-yl]-3-(tetrahydro-2H-pyran-4-yl)propanamide (404 mg) in tetrahydrofuran (5 mL) was cooled to 0° C., and vinylmagnesium bromide (1.0M tetrahydrofuran solution, 5.0 mL) was added dropwise thereto. The reaction mixture was stirred at room temperature for 2 hr, and poured into 1M hydrochloric acid, and the mixture was stirred for 30 min. The reaction mixture was extracted with ethyl acetate, and the ethyl acetate layer was washed with saturated aqueous sodium hydrogen carbonate and saturated brine, dried (MgSO4) and concentrated. The residue was subjected to silica gel column chromatography, and the title compound (168 mg, yield 46%) was obtained as a pale-yellow amorphous solid from a fraction eluted with ethyl acetate-hexane (1:1, volume ratio).

Aufarbeitung

  1. stirringthe mixture was stirred for 30 min
  2. extractionThe reaction mixture was extracted with ethyl acetate
  3. washthe ethyl acetate layer was washed with saturated aqueous sodium hydrogen carbonate and saturated brine
  4. dry with materialdried (MgSO4)
  5. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-83572f37657040cebfaf0cf346fc34f8
Quelldatensatz
uspto-grants-2012_11
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08318746B2

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