Synthesis, structure and catalytic activity of the first iridium(I) siloxide versus chloride complexes with 1,3-mesitylimidazolin-2-ylidene ligand
作者： Ireneusz Kownacki , Maciej Kubicki , Karol Szubert , Bogdan Marciniec
DOI: 10.1016/J.JORGANCHEM.2007.11.013
关键词: Acetophenone 、 Transfer hydrogenation 、 Iridium 、 Medicinal chemistry 、 Catalysis 、 IMes 、 Organic chemistry 、 Carbene 、 Ligand 、 Siloxide 、 Chemistry 、 Physical and Theoretical Chemistry 、 Inorganic chemistry 、 Materials Chemistry 、 Biochemistry
摘要: Abstract The first iridium(I) complex containing siloxyl and N-heterocyclic carbene ligand such as [Ir(cod)(IMes)(OSiMe 3 )] ( 1 ) [Ir(CO) 2 (IMes)(OSiMe have been synthesized their structures solved by spectroscopy X-ray methods well catalytic properties in selected hydrogenation reactions presented comparison to chloride analogues, i.e. [Ir(Cl)(cod)(IMes)] [Ir(Cl)(CO) (IMes)] 4 ). attempts at synthesis of with tert -butoxyl has failed leading instead the iridium hydroxide [Ir(cod)(OH)(IMes)] 5 whose structure also solved. All complexes )–( show square planar geometry typical four-coordinated complexes. Catalytic activity was tested transfer acetophenone olefins.
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