Next, we explored the reaction's scope, we employed identical reaction conditions. Consequently, benzhydryl triarylphosphonium salts 11 effectively participated in the reaction, resulting in the formation of the desired product 14 with yields, as depicted in Figure , were satisfactory. Accordingly, the oxidation reaction was effective across a range of benzhydryl triarylphosphonium salts with different substituted groups, including -Me (14c and 14e), -OMe (14c-k), -Cl (14g and 14i), -Br (14h), -F (14j), and -NO₂ (14k). Notably, the reaction also proceeded efficiently with benzhydryl triarylphosphonium salts containing heteroarene groups, such as indole (14l-o). The proposed mechanism for the oxidation of benzhydryl triarylphosphonium salts (11) is illustrated in Figure . The process begins with the abstraction of an acidic proton from the benzylic position of 11, generating the corresponding ylide species (16). This ylide intermediate 16 then undergoes a concerted addition reaction with molecular oxygen (O₂), leading to the formation of a 1,2dioxetane intermediate (20). Finally, this intermediate collapse, yielding the desired diarylketone (14) and triphenylphosphine oxide as a byproduct.