期刊
DALTON TRANSACTIONS
卷 45, 期 45, 页码 18113-18119出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6dt03464k
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资金
- National Natural Science Foundation of China [21571190]
- Project of Innovation-Driven Plan in Central South University [2015CXS004]
Treatment of the 2,5-bis(2'-pyridyl) pyrrolato (PDP-) anion with {Ru(COD) Cl-2}(n) in THF readily yielded [Ru(PDP)(COD) Cl] (1) in almost quantitative yield. Anion metathesis of 1 in organic solvent by NO3- and OTf-(OTf- = triflato) gave [Ru(PDP)(COD)(NO3)] (2) and [Ru(PDP)(COD)(OTf)] (3), and in aqueous solution by BF4- and PF6- afforded aqueous complexes [Ru(PDP)(COD)(H2O)](BF4) (4(+)center dot BF4-) and [Ru(PDP)(COD) (H2O)](PF6) (4(+)center dot PF6-), respectively. Treatment of 1 with PhICl2 in CH2Cl2 afforded 5 with halogenated pyrrole. These complexes exhibit similar structure, including one Ru(II) atom, one 2,5-bis(2'-pyridyl) pyrrole and one monodentate anion or aqua ligand. Each Ru(II) tightly binds to three adjacent coplanar sites of PDP-ligand to form a meridional configuration. Complex 1 with NaIO4 as the oxidant in EtOAc-CH3CN-H2O (ratio = 3 : 1 : 2) proved to be highly effective in the catalytic oxidation of olefins to carbonyl products.
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