Department of Chemistry Seminar - Organosilicon compounds as unique salt-free reducing reagents of metal compounds, generating catalytically active species
Supporting the below United Nations Sustainable Development Goals:支持以下聯合國可持續發展目標：支持以下联合国可持续发展目标：
Speaker: Prof. Kazushi Mashima
Institution: Graduate School of Pharmaceutical Sciences, The University of Osaka, Japan
Hosted by: Prof. Hugh NAKAMURA
Abstract
Low valent transition metal complexes have been utilized as reagents and catalysts for various bond formation reactions. Various reagents have been developed for reducing higher oxidation metal precursors such as metal halides; however, the interaction of the resulting salts with the in situ generated low-valent or zero-valent metal species disturbed their intrinsic reactivity and catalytic performance. We recently developed a conceptionally new methodology for generating low-valent catalytically active metal species in a salt-free manner upon treating metal sources with versatile reducing reagents such as 3,6‑bis(trimethylsilyl)‑1,4‑cyclohexadienes and 1,4-bis(trimethylsilyl)-1,4- dihydropyrazines. It is highlighted to apply the salt-free reduction method for reducing vanadium, tungsten, nickel compounds and so on for generating catalytically active species. In this presentation, we will also deliver that diboron compounds potentially serve as another reducing reagents.