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

HRID 1674243

Reaktionsgleichung

Reaktionsgleichung von HRID 1674243
[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)=[CH:18][C:17]=1[Cl:30].Cl>O1CCCC1>[Cl:30][C:17]1[CH:18]=[C:19]([C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][C:23]=2[C:28]#[N:29])[CH:20]=[CH:21][C:16]=1[CH2:15][CH:8]([C:3](=[O:7])[CH2:4][CH2:5][CH3:6])[C:9]([O:11][CH2:12][CH3:13])=[O:10]

Komponenten

6

Edukt 4

HCID 313Hydrochloric AcidHCID 24758Sodium hydrideHCID 238498Ethyl 3-oxohexanoateHCID 269675484'-(Bromomethyl)-3'-chloro-[1,1'-biphenyl]-2-carbonitrile

Produkt 1

HCID 57460890Ethyl 2-[(3-chloro-2'-cyanobiphenyl-4-yl)methyl]-3-oxohexanoate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel2×

Versuchsvorschrift

To a suspension of 60% sodium hydride (0.40 g) in tetrahydrofuran (20 mL) was added dropwise a solution of ethyl butyrylacetate (2.13 g) in tetrahydrofuran (10 mL). After stirring for 30 min, 4′-(bromomethyl)-3′-chlorobiphenyl-2-carbonitrile (2.06 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-[(3-chloro-2′-cyanobiphenyl-4-yl)methyl]-3-oxohexanoate. Then, a solution of the obtained ethyl 2-[(3-chloro-2′-cyanobiphenyl-4-yl)methyl]-3-oxohexanoate, ethanimidamide hydrochloride (2.55 g), 28% sodium methoxide (7.80 g) in methanol (50 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 (0.64 g, 73%) 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-0317ab5d7877420fad62e417172b89d4
Quelldatensatz
uspto-grants-2011_08
Patentnummer
US07998968B2

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