Fluorinated and trifluoromethylated corannulenes

Bernd M. Schmidt, Berit Topolinski, Mihoko Yamada, Shuhei Higashibayashi, Mitsuhiko Shionoya, Hidehiro Sakurai, Dieter Lentz

研究成果: Article査読

48 被引用数 (Scopus)

抄録

The syntheses and properties of corannulenes carrying electron-withdrawing groups (F, CF3, C6F5) are reported. Direct fluorination of corannulene (C20H10) was carried out with xenon difluoride, and the crystal structure of the product was confirmed by the X-ray analysis. Novel trifluoromethylated corannulenes, including the versatile 4,9-dibromo-1,2-bis(trifluoromethyl)corannulene, were obtained by various established ring-closing reactions. Besides the use of hexafluorobutyne for the construction of fluoranthenes by Diels-Alder reaction as precursor molecules to form 1,2-disubstituted corannulenes, bis(pentafluorophenyl)acetylene was employed as dienophile. The molecular structure and crystal packing of a trifluoromethylated corannulene was determined by single-crystal X-ray analysis and compared with those known brominated and trifluoromethylated corannulenes. The general electron-acceptor properties of corannulenes bearing substituents introduced in particular positions by liquid-phase synthesis are discussed together with published computational results. Stacked bowls: Starting from substituted fluoranthenes, novel corannulenes bearing electron-withdrawing groups were synthesized regioselectively. Moreover, the first fluorinated corannulene was synthesized by direct fluorination. Crystallographically studied trifluoromethylated corannulenes showed desirable π-stacked structures (see figure), despite their electron-acceptor strength in solution.

本文言語English
ページ(範囲)13872-13880
ページ数9
ジャーナルChemistry - A European Journal
19
41
DOI
出版ステータスPublished - 2013 10月 4
外部発表はい

ASJC Scopus subject areas

  • 触媒
  • 化学 (全般)
  • 有機化学

フィンガープリント

「Fluorinated and trifluoromethylated corannulenes」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル