Copper-catalysed perarylation of cyclopentadiene: synthesis of hexaarylcyclopentadienes - Groupe Nanosciences
Article Dans Une Revue Chemical Science Année : 2024

Copper-catalysed perarylation of cyclopentadiene: synthesis of hexaarylcyclopentadienes

Résumé

While hexaphenylsilacyclopentadiene (hexaphenylsilole) is viewed as an archetypal Aggregation-Induced Emission (AIE) luminogen, its isostructural hydrocarbon surrogate hexaphenylcyclopentadiene has strikingly never been investigated in this context, most probably due to a lack of synthetic availability. Herein, we report a straightforward synthesis of hexaphenylcyclopentadiene, via the direct perarylation of cyclopentadiene upon copper(I) catalysis under microwave activation, with the formation of six new C–C bonds in a single synthetic operation. Using zirconocene dichloride as a convenient source of cyclopentadiene and a variety of aryl iodides as coupling partners, this copper-catalysed cross-coupling reaction gave rise to a series of unprecedented hexaarylcyclopentadienes. The latter are direct precursors of extended π-conjugated polycyclic compounds, and their cyclodehydrogenation under Scholl reaction conditions yielded helicenic 17,17-diarylcyclopenta[l,l′]diphenanthrenes. These structurally complex polyannelated fluorene derivatives can now be prepared in only two synthetic steps from cyclopentadiene.
Fichier principal
Vignette du fichier
2024 Chemical Science.pdf (1.49 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04636067 , version 1 (05-07-2024)

Identifiants

Citer

Yohan Gisbert, Pablo Simón Marqués, Caterina Baccini, Seifallah Abid, Nathalie Saffon-Merceron, et al.. Copper-catalysed perarylation of cyclopentadiene: synthesis of hexaarylcyclopentadienes. Chemical Science, 2024, 15 (24), pp.9127-9137. ⟨10.1039/D4SC02458C⟩. ⟨hal-04636067⟩
125 Consultations
22 Téléchargements

Altmetric

Partager

More