Heterogeneous Supported Palladium Catalysts for Liquid‐Phase Allylation of Nucleophiles

In recent years, palladium‐catalyzed allylation has become the focus of much research. However, conventional homogeneous Pd catalysts face problems regarding their recovery, reuse, and cost, especially with respect to green chemistry principles. Herein, we present an overview of the development of catalytic allylation with various heterogeneous Pd catalysts, because they can be easily and conveniently recovered and reused. We also emphasize the use of different solid supports such as polymers, silica, and other hybrid supports to inspire future research in this promising field. Moreover, the unique effects of support surfaces for enhancing catalysis by immobilized heterogeneous Pd species are introduced. Well supported: Palladium‐catalyzed allylation has been investigated for decades as an important synthetic reaction in the field of organic chemistry. The rise of green chemistry reinforces the importance of recovery and reuse of the palladium catalysts. This Minireview describes polymer‐, silica‐, and hybrid‐material‐supported palladium catalysts used in liquid‐phase allylation reactions. These heterogeneous catalysts provide excellent productivity and outstanding recyclability.