3 years ago

Exceptionally Active Assembled Dinuclear Ruthenium(II)-NNN Complex Catalysts for Transfer Hydrogenation of Ketones

Exceptionally Active Assembled Dinuclear Ruthenium(II)-NNN Complex Catalysts for Transfer Hydrogenation of Ketones
Huining Chai, Tingting Liu, Zhengkun Yu, Liandi Wang
Dinuclear ruthenium(II)-NNN complexes were efficiently assembled by means of coordinatively unsaturated 16-electron mononuclear ruthenium(II)-pyrazolyl-imidazolyl-pyridine complex and 4,4′-linked bipyridine ligands. The diruthenium(II)-NNN complex assembled through 4,4′-(CH2)3-bipyridine exhibited exceptionally high catalytic activity for the transfer hydrogenation (TH) of ketones in refluxing 2-propanol and reached TOF values up to 1.4 × 107 h–1, demonstrating a remarkable cooperative effect from the ruthenium(II)-NNN functionalities.

Publisher URL: http://dx.doi.org/10.1021/acs.organomet.7b00356

DOI: 10.1021/acs.organomet.7b00356

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