“…Besides, many catalytic approaches, that employ molecular oxygen or H 2 O 2 as oxidants, have been developed. However, most of these strategies employ metal‐based (Fe, Pd, Cu) homogeneous catalysts (Figure 1b), which are in some cases of high costs, require multiple synthetic steps for their ligands and are difficult to adapt to industrial applications [31–36] . In addition, recurring to pure oxygen or other strong oxidants (e.g., H 2 O 2 ) should be discouraged in favor of air, which is a natural, easily available, economic and non‐hazardous source of oxygen [37] …”