Herein, we report a Pd-catalyzed aerobic lactamization of unactivated γ-C(sp3)–Hbonds of aliphaticcarboxylicacids and amino acids derivatives. The utilization of Pd(OAc)2 as a catalyst, along with catalytic AgNO2 as an electron transfer mediator, circumvents the need for stoichiometric oxidants and demonstrates significant practicality.
We report the ligand‐enabled C−H activation/olefination of freecarboxylicacids in the γ‐position. Through an intramolecular Michael addition, δ‐lactones are obtained as products. Two distinct ligand classes are identified that enable the challenging palladium‐catalyzed activation of freecarboxylicacids in the γ‐position. The developed protocol features a wide range of acid substrates and olefin