52248-74-5Relevant academic research and scientific papers
Cycloplatinated(II) complex bearing 2-vinylpyridine and monodentate phosphine ligands: Optical properties and kinetic study
Niazi, Maryam,Shahsavari, Hamid R.
, p. 82 - 91 (2016/01/09)
The 2-vinylpyridinate complex [PtMe(Vpy)(DMSO)], C, is successfully prepared from dimeric platinum(II) complex cis,cis-[Me2Pt(μ-SMe2)2PtMe2], B, in the presence of DMSO and 2-vinylpyridine ligand. The DMSO molecule in complex C can be readily substituted by methyldiphenylphosphine (PPh2Me), allowing synthesis of [PtMe(Vpy)(PPh2Me)], 1, which has been fully characterized spectroscopically. Complex 1 is emissive in solid state and solution at room temperature and at 77 K. This complex displays an intense phosphorescence emission (with a significantly long lifetime) which is originated from mixed 3ILCT/3MLCT excited state. Additionally, complex 1 undergoes oxidative addition with alkyl halide (MeI) bearing [PtMe2I(Vpy)(PPh2Me)], 2, after 2 h. Kinetic studies suggest that the latter reaction (oxidative addition) proceed by a classical SN2 mechanism. The rate of oxidative addition reaction at different temperatures is measured and high negative ΔS# value is obtained for the reaction which supported the proposed mechanism. On the basis of NMR spectroscopy, when complex 1 reacts with MeI under extended time (5 days), complex 2 gradually converts to a mixture of platinum complexes trans-[PtMeI(PPh2Me)2], 3, [{PtMe2(Vpy)2(μ-I)2], 4, and a free ligand Z/E-[C8H9N], 5, based on the carbon-carbon bond coupling.
Synthese regioselective par voie organometallique de pyridines, 4-picolines et 3,5-lutidines substituees en 2 par un groupe insature et/ou fonctionnel
Al-Arnaout, A.,Courtois, G.,Miginiac, L.
, p. 139 - 154 (2007/10/02)
A regioselective one-pot synthesis of 2-substituted pyridine derivatives from N-alkoxycarboxylpyridinium salts and α-unsaturated organozinc compounds is described.Similarly, functional alkynyl organomagnesium compounds lead to 2-alkynyl-ω-functional pyridines, from which (E)-2-alkenyl or 2-alkyl-ω-functional pyridines can be obtained by partial or complete reduction.
