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Sodium Carbonate → 4-(3-Chloro-5-vinylpyridin-2-yl)benzaldehyde

HRID 1430095
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Reaktionsgleichung

Reaktionsgleichung von HRID 1430095
C([O-])([O-])=O.[Na+].[Na+].[CH:7]([C:9]1[CH:14]=[CH:13][C:12](B(O)O)=[CH:11][CH:10]=1)=[O:8].Cl[C:19]1[C:24]([Cl:25])=[CH:23][C:22]([CH:26]=[CH2:27])=[CH:21][N:20]=1>COCCOC.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Cl:25][C:24]1[C:19]([C:12]2[CH:13]=[CH:14][C:9]([CH:7]=[O:8])=[CH:10][CH:11]=2)=[N:20][CH:21]=[C:22]([CH:26]=[CH2:27])[CH:23]=1
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Komponenten

7

Edukt 3

HCID 10340Sodium CarbonateHCID 5910734-Formylphenylboronic AcidHCID 574168492,3-Dichloro-5-ethenylpyridine

Produkt 1

HCID 578256984-(3-Chloro-5-vinylpyridin-2-yl)benzaldehydeAusbeute 94,7 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 178418397HCID 178418397, Verbindung
Katalysator
HCID 962WaterLösungsmittel
HCID 80711,2-DimethoxyethaneLösungsmittel

Versuchsvorschrift

4.1 g of Na2CO3 (39 mmol), 2.0 g of 4-formylphenylboronic acid (13 mmol), and 0.45 g of Pd(PPh3)4 were added to 2.5 g of compound (8) (14.9 mmol) prepared in Example 5 dissolved in 50 mL of 1,2-dimethoxyethane and 50 mL of distilled water, and refluxed under heating and stirring for 18 hours. The mixture was cooled to room temperature, and concentrated about 50% under reduced pressure. The aqueous layer was extracted with ethyl acetate, the organic layer was dried over magnesium sulfate, and then concentrated under reduced pressure. The residue was separated by column chromatography (eluting solvent: ethyl acetate/hexane=1/4) to obtain 3.0 g 4-(3-chloro-5-vinylpyridin-2-yl)benzaldehyde (yield 82%).

Aufarbeitung

  1. temperatureunder heating
  2. concentrationconcentrated about 50% under reduced pressure
  3. extractionThe aqueous layer was extracted with ethyl acetate
  4. dry with materialthe organic layer was dried over magnesium sulfate
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was separated by column chromatography (eluting solvent: ethyl acetate/hexane=1/4)

Quellen und Nachweise

ORD-Eintrag
ord-e9e04adaffb047cfb998a9f4402c8c8d
Quelldatensatz
uspto-grants-2015_01
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08940769B2

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