Strategies to immobilize well-defined olefin metathesis catalysts: Supported homogeneous catalysis vs. surface organometallic chemistry

This review is mainly devoted to a description of the strategies that have been implemented to develop well-defined olefin metathesis catalysts immobilized on solid supports. Two main approaches have been investigated involving supported homogenous catalysts or heterogeneous catalysts prepared by surface organometallic chemistry. Advantages, limitations and possible developments of these systems are discussed.