811862-80-3Relevant academic research and scientific papers
Rhenium complexes with a pyridinyl-naphthyridine ligand: Synthesis, characterization, and catalytic activity
Su, Tzu-Chieh,Liu, Yi-Hung,Peng, Shie-Ming,Liu, Shiuh-Tzung
, p. 2362 - 2367 (2013)
Treatment of [Re2(CO)8(CH3CN)2] with 2,7-dipyridinyl-1,8-naphthyridine (bpnp) thermally provided mononuclear [(N,N-bpnp)Re(CO)3Cl] (1). Further reaction of 1 with rhenium carbonyls yielded ortho-metallation dinuclear rhenium complex 2. Both complexes were characterized by spectroscopic analyses and single-crystal X-ray determination. Complex 1 also reacted with [PdMeCl(COD)] and [Ir(COD)Cl] 2 by means of ortho-metallation to yield the corresponding heterodinuclear species. Complex 2 appears to be an excellent precatalyst to promote the insertion of terminal alkynes into acetoacetates, which subsequently undergo cyclization to form 2-pyranones. Complexation of 2,7-dipyridinyl-1,8- naphthyridine with rhenium carbonyls provided a N,N-coordination complex, which subsequently reacted with rhenium carbonyls to form an o-metallated dinuclear species. This dirhenium complex is catalytically active for the insertion of terminal acetylenes into 2-methylacetoacetates. Copyright
