Synthesis and characterization of ruthenium (II) carbonyl complexes containing naphthyridine and acetylacetonate ligands and their catalytic activity in the hydrogen transfer reaction
A series of novel complexes of the Ru(L)2(CO)2 L = 2-(3′ methoxyphenyl)-1,8-naphthyridine (complex 1),
and type Ru(acac)2(L)(CO) with L = 2-(3′ methoxyphenyl)-1,8-naphthyridine (complex 2), 2-(2′-
bromophenyl)-1,8-naphthyridine (complex 3) and 2-phenyl-1,8-naphthyridine (complex 4) was synthesized
and characterized. We found that the complexes 2, 3, and 4 can be directly synthesized from
Ru3(CO)12. The complex Ru(acac)2(L)(CO) L = 2-(3′ methoxyphenyl)-1,8-naphthyridine (2) was characterized
by X-ray single crystal analysis which confirms the monodentate coordination mode of the
1,8-naphthyridine derivate and the cis arrangement of the acac ligands. Preliminary studies in transfer hydrogenation
of acetophenone in the presence of 2-propanol show the good catalytic activity of complex 2 with
92% conversion.
Synthesis and characterization of ruthenium (II) carbonyl complexes containing naphthyridine and acetylacetonate ligands and their catalytic activity in the hydrogen transfer reaction