Sequential unsymmetrical aryl coupling of o-substituted aryl iodides with o-bromophenols and reaction with olefins: palladium-catalyzed synthesis of 6H-dibenzopyran derivatives.
Dibenzopyran derivatives are prepared by palladium- and norbornene-catalyzed reaction of aryl iodides, o-substituted with electron-releasing substituents, o-bromophenols, and activated alkenes.
Motti
Elena
E
Dipartimento di Chimica Organica e Industriale dell'Università, Viale G. P. Usberti 17/A, I-43100 Parma, Italy.
Faccini
Fiorenza
F
Ferrari
Ilaria
I
Catellani
Marta
M
Ferraccioli
Raffaella
R