1446004-39-2Relevant academic research and scientific papers
Cyclometalation of anthyridine-based ligands with dirhodium acetates: Structure and catalytic activity
Huang, Da-Wei,Lo, Ying-Hao,Liu, Yi-Hung,Peng, Shie-Ming,Liu, Shiuh-Tzung
, p. 4009 - 4015 (2013)
Coordination of 2,8-Ar2-5-phenylanthyridines (Ar = 2-thienyl, 1a; Ar = 2-ClC6H4-, 1b) with dirhodium tetraacetate yielded the cyclometalated complexes [Rh2(OAc)3(metalated- 1a)] (3a) and [Rh2(OAc)3(metalated-1b)] (3b), respectively. Under acidic conditions, cleavage of the Rh-C bond in 3a,b took place to give the corresponding coordination complexes 4a,b. Treatment of 3a,b with PPh3 led to the phosphine-cyclometalated species [Rh 2(OAc)2{P,C-(C6H4)PPh 2}(metalated-1a)] (5a) and [Rh2(OAc)2{P,C- (C6H4)PPh2}(metalated-1b)] (5b), respectively. These new dirhodium complexes have been structurally characterized by NMR spectroscopy, and some representative compounds were also analyzed by X-ray methods. The use of these newly prepared dirhodium complexes as catalysts for the allylic oxidation of cyclohexenes was investigated.
