Two electron-reduction of the Ti guanidinate complex (Im N)( guan)TiCl gives (η -Im N)( guan)Ti (1 ) and (Im N)( guan)Ti(η -C H ) (1 ) ( guan=[(tBuC=N)C(NXylyl) ] , Xylyl=2,5-dimethylphenyl) in the absence or presence of benzene, respectively. These complexes have been found to hydrogenate monocyclic and polycyclic arenes under relatively mild conditions (150 psi, 80 °C)-the first example of catalytic, homogeneous arene hydrogenation with TON >1 by a Group IV system.
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| http://dx.doi.org/10.1002/chem.201905466 | DOI Listing |
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