The use of polymer supports in organic synthesis begins with solid-phase synthesis where the synthetic target is synthesized attached to the polymer. For a variety of reasons, including ease of reaction monitoring and product characterization, shorter method, development time, etc., the role of the polymer has gradually shifted to supporting reagents for reacting with solution-phase substrates in what is sometimes referred to as polymer-assisted-synthesis. This book discusses various organic syntheses with support of various polymers such as peptides, polystyrene, alkaloids, polyisobutylene, poly(ethylene imine), polyacrylic acid, poly (2-oxazoline), poly ethers, polynorbornenes and also polymers coordinating with transition metals like ruthenium, iridium, palladium, cobalt, copper and rhodium