Potassium Carbonate → 1H,2H-Hexafluorocyclopentene

1,2-bis(5-bromo-2-methyl-3-thienyl)hexafluorocyclopentene (1.0 g, 0.002 mol) was dissolved in dimethoxyethane (50 ml), and palladium tetra(triphenylphosphine) (120 mg) was added to the mixture which was stirred for 5 minutes under argon atmosphere. With 5-(5-trimethylsilyl-2-thienyl)-2-thienyl boric acid (1.4 g, 0.006 mol) and an aqueous solution of potassium carbonate (0.1 mol dm-3, 10 ml) were added, the reaction mixture was refluxed for two hours. It was then concentrated under reduced pressures, extracted with diethylether and rinsed with water. With the diethylether removed under reduced pressures, the product was purified by alumina column chromatogram to give 1,2-bis[2-methyl-5{5-trimethylsilyl-2-thienyl)-2-thienyl}-3-thienyl]hexafluorocyclopentene (550 mg, 0.0007 mol).

1. temperaturethe reaction mixture was refluxed for two hours
2. concentrationIt was then concentrated under reduced pressures
3. extractionextracted with diethylether
4. washrinsed with water
5. customWith the diethylether removed under reduced pressures
6. customthe product was purified by alumina column chromatogram

ORD record

ord-197bcc85a93f490aae992086e3528101

Source dataset

uspto-grants-1998_03

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US05734065