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Transition metal complexes with 2-aryl-substituted indenyl phosphine ligands: structures and catalytic properties

Indenyl; Phosphine; Cross-coupling

Phosphorus in Synthetic Chemistry > 2) Phosphorus compounds as ligands

From 2010, our group designed and synthesized a series of 2-aryl-substituted indenyl phosphines, which display unique reactivities both in stoichiometric reactions and metal-catalysed reactions (Fig. 1).^[1-4] We were the first to report dinuclear indenyl ruthenium carbonyl complexes with an unprecedented η³ coordination mode.^[2] Using {Ru[κ(P):(η6-2-mesityl-1H-inden-3-yl)PCy₂]Cl₂} as a catalyst, the dehydrogenation of alcohols gave a series of ketones in moderate to high yields, and liberating H₂.^[3] Meanwhile, palladium-catalyzed C–C and C–N cross-coupling reactions employing 2-aryl-substituted indenyl phosphine ligands have been proven effective in constructing functional compounds, including pesticides, materials and drugs ^[1,4]