2-(4'-Ethyl-3-fluorobiphenyl-4-yl)-5-(pent-1-enyl)selenophene → HCID 59456308, Verbindung
Reaktionsgleichung
[CH2:1]([C:3]1[CH:8]=[CH:7][C:6]([C:9]2[CH:14]=[CH:13][C:12]([C:15]3[Se:16][C:17]([CH:20]=[CH:21][CH2:22][CH2:23][CH3:24])=[CH:18][CH:19]=3)=[C:11]([F:25])[CH:10]=2)=[CH:5][CH:4]=1)[CH3:2]>C(OCC)(=O)C.[Pd]>[CH2:1]([C:3]1[CH:4]=[CH:5][C:6]([C:9]2[CH:14]=[CH:13][C:12]([C:15]3[Se:16][C:17]([CH2:20][CH2:21][CH2:22][CH2:23][CH3:24])=[CH:18][CH:19]=3)=[C:11]([F:25])[CH:10]=2)=[CH:7][CH:8]=1)[CH3:2]Komponenten
4
Edukt 1
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 2
Versuchsvorschrift
17.1 g (43.0 mmol) of 2-(4′-ethyl-3-fluorobiphenyl-4-yl)-5-(pent-1-enyl)-selenophene are hydrogenated in 170 ml of ethyl acetate, in the presence of Pd/C (5% of Pd) at atmospheric pressure and RT. The reaction soln. is filtered and concentrated to dryness, and the crude product is purified by column chromatography (SiO2, n-heptane:toluene=98:2→95:5). The further purification is carried out by recrystallisation from ethanol and n-heptane. 2-(4′-Ethyl-3-fluorobiphenyl-4-yl)-5-pentylselenophene is obtained as a colourless solid (m.p. 52° C.).