1408053-87-1Relevant articles and documents
A sequential Pd/norbornene-catalyzed process generates o- biaryl carbaldehydes or ketones via a redox reaction or 6 h -dibenzopyrans by C-O ring closure
Motti, Elena,Ca, Nicola Della,Xu, Di,Piersimoni, Anna,Bedogni, Elena,Zhou, Zhi-Ming,Catellani, Marta
, p. 5792 - 5795 (2012)
o-Biaryl carbaldeydes and ketones are obtained through the one-pot reaction of o-aryl iodides with o-bromobenzyl alcohols under the catalytic action of Pd and norbornene, in the presence of a base. The same reaction can also give dibenzopyrans by Pd and norbornene catalysis with a different termination, leading to C-O ring closure. In both cases the process first leads to a five-membered palladacycle, which controls C-C coupling, then to a seven-membered oxapalladacycle, which gives aldehydes and ketones or dibenzopyrans.
