The intramolecular arylation of 2-pyrones, 2-pyridones, coumarins and quinolones is reported using Pd precatalyst sources without added phosphine ligands. The excellent yields and convenient reagents enables the formation of various analogues containing these moieties, and access to potential biologically active candidates. Stoichiometric studies were carried out to provide an insight into the oxidation addition step. A switch in regioselectivity, together with a hydrodebromination process, was observed in the case of a 3-bromo-2-pyrone.
|Number of pages||8|
|Publication status||Published - 7 Oct 2014|
- Organic Chemistry
- Synthetic Chemistry