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Sodium Chloride → 2-{6-[(Trimethylsilyl)ethynyl]pyridin-2-yl}pyrimidine

HRID 705031
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 705031
Br[C:2]1[N:7]=[C:6]([C:8]2[N:13]=[CH:12][CH:11]=[CH:10][N:9]=2)[CH:5]=[CH:4][CH:3]=1.C(NC(C)C)(C)C.[C:21]([Si:23]([CH3:26])([CH3:25])[CH3:24])#[CH:22].[Cl-].[Na+]>O1CCCC1.[Cu]I.Cl[Pd](Cl)(P(C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)P(C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[CH3:24][Si:23]([C:21]#[C:22][C:2]1[N:7]=[C:6]([C:8]2[N:13]=[CH:12][CH:11]=[CH:10][N:9]=2)[CH:5]=[CH:4][CH:3]=1)([CH3:26])[CH3:25]
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

8

Edukt 4

HCID 5234Sodium ChlorideHCID 7912DiisopropylamineHCID 66111TrimethylsilylacetyleneHCID 158812582-(6-Bromopyridin-2-yl)pyrimidine

Produkt 1

HCID 675133982-{6-[(Trimethylsilyl)ethynyl]pyridin-2-yl}pyrimidine

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 24350
Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)
Katalysator
HCID 178479802HCID 178479802, VerbindungKatalysator
HCID 8028TetrahydrofuranLösungsmittel

Reaktionsbedingungen

Temperatur
50 °C

Versuchsvorschrift

1.00 g (3.99 mmol) of 2-(6-bromopyridin-2-yl)pyrimidine, 45.5 mg (239 μmol) of copper(I) iodide and 670 μl (4.78 mmol) of N-isopropylpropane-2-amine were initially charged in 15 ml of tetrahydrofuran and degassed in an ultrasonic bath under argon. The reaction mixture was then heated to 50° C., 168 mg (239 mol) of dichloro[bis(triphenylphosphoranyl)]palladium were added and 1.70 ml (12.0 mmol) of ethynyl(trimethyl)silane were added dropwise over a period of one hour. The mixture was then stirred at 60° C. for a further two hours. For work-up, the mixture was added to semiconcentrated sodium chloride solution, the mixture was filtered through Celite and the aqueous phase was extracted repeatedly with ethyl acetate. The combined organic phases were dried over magnesium sulfate, filtered, concentrated and purified chromatographically. This gave 520 mg (51% of theory) of 2-{6-[(trimethylsilyl)ethynyl]pyridin-2-yl}pyrimidine.

Aufarbeitung

  1. customdegassed in an ultrasonic bath under argon
  2. filtrationthe mixture was filtered through Celite
  3. extractionthe aqueous phase was extracted repeatedly with ethyl acetate
  4. dry with materialThe combined organic phases were dried over magnesium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated
  7. custompurified chromatographically

Quellen und Nachweise

ORD-Eintrag
ord-1298a6f452cc400ca0b63f7166fb57a9
Quelldatensatz
uspto-grants-2015_11
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US09173396B2

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