“…In recent years salicylaldehydes have been widely used as an important key-structural motif for the generation of various significant organic scaffolds such as chromones, benzofurans, chroman-4-ones, homoisoflavonoids and flavones by directed aldehydic C-H activation. [28][29][30][31][32][33][34][35] Chromones are the oxygen-containing heterocycles which are frequently found in biologically significant natural products such as flavones and isoflavones. Hitherto, a lot of transition-metal catalysed C-H activations of salicylaldehydes have been reported, but only one Ir-catalysed C-H activation of salicylaldehyde has been reported, by Miura and coworkers.…”