Abstract
| - The reaction of silylaryl triflates, CsF, and ortho-heteroatom-substituted benzoates affords a general andefficient way to prepare biologically interesting xanthones, thioxanthones, and acridones. This chemistrypresumably proceeds by a tandem intermolecular nucleophilic coupling of the benzoate with an aryneand a subsequent intramolecular electrophilic cyclization.
|