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Hydrochloric Acid → Ethyl 2-[(2'-cyano-2-methoxybiphenyl-4-yl)methyl]-3-oxohexanoate

HRID 1674251
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1674251
[H-].[Na+].[C:3]([CH2:8][C:9]([O:11][CH2:12][CH3:13])=[O:10])(=[O:7])[CH2:4][CH2:5][CH3:6].Br[CH2:15][C:16]1[CH:21]=[CH:20][C:19]([C:22]2[C:23]([C:28]#[N:29])=[CH:24][CH:25]=[CH:26][CH:27]=2)=[C:18]([O:30][CH3:31])[CH:17]=1.Cl>O1CCCC1>[C:28]([C:23]1[CH:24]=[CH:25][CH:26]=[CH:27][C:22]=1[C:19]1[CH:20]=[CH:21][C:16]([CH2:15][CH:8]([C:3](=[O:7])[CH2:4][CH2:5][CH3:6])[C:9]([O:11][CH2:12][CH3:13])=[O:10])=[CH:17][C:18]=1[O:30][CH3:31])#[N:29]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 313Hydrochloric AcidHCID 24758Sodium hydrideHCID 238498Ethyl 3-oxohexanoateHCID 197718414'-(Bromomethyl)-2'-methoxybiphenyl-2-carbonitrile

Produkt 1

HCID 57460898Ethyl 2-[(2'-cyano-2-methoxybiphenyl-4-yl)methyl]-3-oxohexanoate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028
Tetrahydrofuran
Lösungsmittel
2×

Versuchsvorschrift

To a suspension of 60% sodium hydride (1.80 g) in tetrahydrofuran (50 mL) was added dropwise a solution of ethyl butyrylacetate (9.50 g) in tetrahydrofuran (30 mL). After stirring for 30 min, 4′-(bromomethyl)-2′-methoxybiphenyl-2-carbonitrile (8.79 g) was added. The mixture was stirred at room temperature for 15 hr, and 1 M hydrochloric acid was added. The mixture was extracted with ethyl acetate, and the organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate and concentrated. The residue was purified by silica gel column chromatography to give ethyl 2-[(2′-cyano-2-methoxybiphenyl-4-yl)methyl]-3-oxohexanoate. Then, a solution of the obtained ethyl 2-[(2′-cyano-2-methoxybiphenyl-4-yl)methyl]-3-oxohexanoate, ethanimidamide hydrochloride (3.25 g) and 28% sodium methoxide (9.91 g) in methanol (70 mL) was stirred overnight. The solvent was evaporated under reduced pressure, and saturated aqueous ammonium chloride solution was added to the residue. The precipitated solid was collected by filtration, and washed with water and diethyl ether to give the title compound (5.63 g, 52%) as a white solid.

Aufarbeitung

  1. stirringThe mixture was stirred at room temperature for 15 hr
  2. extractionThe mixture was extracted with ethyl acetate
  3. washthe organic layer was washed with saturated brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. concentrationconcentrated
  6. customThe residue was purified by silica gel column chromatography

Quellen und Nachweise

ORD-Eintrag
ord-06350b6d83ec4261a6d943d0692a59fe
Quelldatensatz
uspto-grants-2011_08
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07998968B2

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