An Alternative Procedure for the Synthesis of [5]- and [7]Carbohelicenes

An Alternative Procedure for the Synthesis of [5]- and [7]Carbohelicenes

2‐Bromo[5]helicene derivatives and substituted [7]helicenes have been prepared through a synthetic sequence relying on Heck‐type and photocyclodehydrogenation reactions. This procedure provides a new, versatile and efficient approach to helicene derivatives. (© Wiley‐VCH Verlag GmbH & Co. KGaA,...

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Veröffentlicht in:European journal of organic chemistry 2004-04, Vol.2004 (7), p.1517-1522
Hauptverfasser: El Abed, Riadh, Ben Hassine, Béchir, Genêt, Jean-Pierre, Gorsane, Mohamed, Marinetti, Angela
Format: Artikel
Sprache:eng
Schlagworte:
Heck reaction
Helicenes
Palladium
Photocyclisation
Synthetic methods
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Zusammenfassung:2‐Bromo[5]helicene derivatives and substituted [7]helicenes have been prepared through a synthetic sequence relying on Heck‐type and photocyclodehydrogenation reactions. This procedure provides a new, versatile and efficient approach to helicene derivatives. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)
ISSN:1434-193X
1099-0690
DOI:10.1002/ejoc.200300470