Anti-Markovnikov hydroarylation of styrenes catalyzed by an in situ generated ruthenium complex
作者:Rémi Martinez、Jean-Pierre Genet、Sylvain Darses
DOI:10.1039/b806121a
日期:——
An efficient and practical catalytic system for the anti-Markovnikov ruthenium-catalyzed hydroarylation of styrenes with acetophenone, allowing a straightforward access to bibenzyl backbones, is described for the first time: this process, involving regioselective C-H bond activation, is complementary to a Friedel-Crafts type reaction giving the branched adduct.
This paper reports that the treatment of Ru/CeO2 with PPh3 and HCHO in 2-methoxyalcohol was an efficient way to generate the catalytically active Ru species for hydroarylation of C-Cmultiplebonds. A variety of alkenes was applicable toward the title reactions. The solid Ru/CeO2 could be recycled for several times.
unit appended on the single-carbon linker, the ligand harbors an unusually rigid backbone that presumably stabilizes its complexation with transition metals during catalysis. Compared with the known dppm ligand, it exhibited superior reactivity and regioselectivity in a number of alkene hydrofunctionalization reactions, catalyzed by iridium and rhodium.