Unsymmetrical Aryl-Aryl Cross-Coupling Leading to 6H-Dibenzopyrans

Elena Motti; Nicola Della Ca’; Raffaella Ferraccioli; Marta Catellani

doi:10.1055/s-2007-990934

PSP

Unsymmetrical Aryl-Aryl Cross-Coupling Leading to 6H-Dibenzopyrans

Elena Motti^a, Nicola Della Ca’^a, Raffaella Ferraccioli^b, Marta Catellani*^a
^a Dipartimento di Chimica Organica e Industriale, Università di Parma, V. le G. P. Usberti 17/A, 43100 Parma, Italy
Fax: +39(0521)905472; e-Mail: marta.catellani@unipr.it;
^b CNR-Istituto di Scienze e Tecnologie Molecolari (ISTM), Via C. Golgi 19, 20133 Milano, Italy

Abstract

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Abstract

6H-Dibenzopyrans are prepared starting from ortho-substituted aryl iodides, o-bromophenols and activated olefins, in the presence of a catalytic system based on palladium acetate and norbornene by means of a simple and efficient, one-pot, three-component procedure under mild conditions.

Key words

dibenzopyrans - aryl-aryl cross-coupling - palladium - norbornene - catalysis

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References

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