StartseiteMCPWorkbenchSkills
StartseiteWorkbenchBenachrichtigungenMein Bereich
llms.txt · MCP-AnleitungDatenschutz · Nutzungsbedingungen · Supportv1.8.0
  1. Startseite
  2. /Reaktion

Sodium Carbonate → 2-(3,5-Difluoro-4'-propylbiphenyl-4-yl)-5-methylthiophene

HRID 449732
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 449732
Br[C:2]1[S:3][C:4]([CH3:7])=[CH:5][CH:6]=1.[CH2:8]([C:11]1[CH:16]=[CH:15][C:14]([C:17]2[CH:22]=[C:21]([F:23])[C:20](B(O)O)=[C:19]([F:27])[CH:18]=2)=[CH:13][CH:12]=1)[CH2:9][CH3:10].C(=O)([O-])[O-].[Na+].[Na+]>C1(C)C=CC=CC=1.C(O)C.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>[F:23][C:21]1[CH:22]=[C:17]([C:14]2[CH:15]=[CH:16][C:11]([CH2:8][CH2:9][CH3:10])=[CH:12][CH:13]=2)[CH:18]=[C:19]([F:27])[C:20]=1[C:2]1[S:3][C:4]([CH3:7])=[CH:5][CH:6]=1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 3

HCID 10340Sodium CarbonateHCID 698312-Bromo-5-methylthiopheneHCID 580284314'-Propyl-3,5-difluoro-4-biphenylboronic acid

Produkt 1

HCID 580284522-(3,5-Difluoro-4'-propylbiphenyl-4-yl)-5-methylthiophene

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418397HCID 178418397, Verbindung
Katalysator
HCID 21863594Toluene ethanolLösungsmittel

Versuchsvorschrift

A mixture of 5.50 g (31.0 mmol) of 2-bromo-5-methylthiophene, 9.0 g (32.6 mmol) of 4′-propyl-3,5-difluoro-4-biphenylboronic acid, 1.83 g (1.58 mmol) of tetrakis(triphenylphosphine)palladium(0) and 36 ml of 2 N sodium carbonate soln. in 90 ml of toluene/ethanol (1:2) is heated under reflux for 16 h. After cooling, the organic phase is separated off, and the aqueous phase is extracted a number of times with toluene. The combined organic phases are washed with water and sat. sodium chloride soln. The solution is dried using sodium sulfate and concentrated to completion. The residue is purified by column chromatography (SiO2, n-heptane:toluene=9:1). Further purification is carried out by recrystallisation from ethanol and n-heptane; 2-(3,5-difluoro-4′-propylbiphenyl-4-yl)-5-methylthiophene (PUS-3-1) is obtained as a colourless solid (m.p. 75° C.).

Aufarbeitung

  1. temperatureunder reflux for 16 h
  2. temperatureAfter cooling
  3. customthe organic phase is separated off
  4. extractionthe aqueous phase is extracted a number of times with toluene
  5. washThe combined organic phases are washed with water and sat. sodium chloride soln
  6. customThe solution is dried
  7. concentrationconcentrated to completion
  8. customThe residue is purified by column chromatography (SiO2, n-heptane:toluene=9:1)
  9. customFurther purification
  10. customis carried out by recrystallisation from ethanol and n-heptane

Quellen und Nachweise

ORD-Eintrag
ord-8d5c3e19b21040d981c448917de5348d
Quelldatensatz
uspto-grants-2013_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08486297B2

Notizen zur Reaktion

Wird geladen…

Auf dieser SeiteKomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion