Hoveyda -Grubbs type complexes with ruthenium- pnictogen/ chalcogen/halogen coordination bond. Synthesis, catalytic activity, application

Catalytic olefin metathesis using Hoveyda - Grubbs type ruthenium complexes is a powerful tool for creating complex molecules possessing a variety of practically useful properties. This method is also applied for obtaining modern polymer materials from low-demand petroleum products. Among all ruthenium complexes containing five- or six-membered chelate rings, the commercially available HG-II catalyst is the most common. In addition, other Hoveyda - Grubbstype complexes, which include a Het -> -> Ru donor - acceptor bond in the chelate ring, often exhibit metathesis activity equal to or superior to that of HG-II. . This review considers second-generation N-heterocyclic ruthenium carbene Hoveyda-Grubbs type complexes with donor-acceptor bonds such as O -> Ru, S -> Ru, Se -> Ru, N -> Ru, P -> Ru and Hal -> Ru in the chelate ring. Methods of preparation, analysis of stability and catalytic activity of such complexes are compared, and examples of the application of these organometallic ruthenium derivatives in the synthesis of practically relevant products are provided. The literature from 2010 to 2023 is summarized, making this review useful for a broad audience of chemists working in the field of heterocyclic and organometallic chemistry, as well as practitioners involved in the production of catalysts and polymers.