The palladium-catalyzed Mizoroki-Heck reaction, established in the early 1970s, has become an indispensable tool in organic synthesis, facilitating the efficient formation of multi-substituted olefins. Its applications span the synthesis of pharmaceuticals, natural products, and organic materials. Despite its broad utility and significant advancements, the reaction predominantly facilitates the coupling of vinyl or aryl halides, with applications involving alkyl halides remaining challenging (Figure ). This limitation stems from the difficulties in the oxidative addition of alkyl halides to the palladium center and the tendency for premature β-hydride elimination, resulting in undesired side products. To overcome these challenges inherent in conventional two-electron pathways, Pd-catalyzed oneelectron Mizoroki-Heck reactions of alkyl halides under both thermal 4 and photochemical conditions have been developed, generating Pd(I)/alkyl radical hybrids that circumvent the premature β-hydride eliminations, thereby broadening the reaction scope. However, the use of 1,1-disubstituted alkyl alkenes as coupling partners under thermal conditions typically results in vinylation (thermodynamic) products or a mixture of vinylation and allylation (kinetic) products, with the selective formation of allylation products remaining rare. While isolated examples of excited-state Pd-catalyzed intra-molecular desaturation reactions favoring less substituted kinetic alkene products exist, 9 a general protocol for the excited-state Pd-catalyzed intermolecular formal allylic alkylation of alkenes with alkyl halides has not been reported. Establishing such reactivity could offer a new avenue to address unmet challenges in organic synthesis.