Effect of Ligand Bulk in Ruthenium-Catalyzed Olefin Metathesis: IPr* vs IPr
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资源简介：
Novel ruthenium catalysts, [RuCl2(IPr*)(PPh3)(3-phenylindenylidene)] (1) and [RuCl2(IPr*)(Py)(3-phenylindenylidene)] (2), bearing the very bulky ligand IPr* are reported. The complexes were tested in ring closing and cross-metathesis, and their activities were compared to that displayed by [RuCl2(IPr)(PPh3)(3-phenylindenylidene)] (3) and the new [RuCl2(IPr)(Py)(3-phenylindenylidene)] (4), in order to assess how the steric hindrance of the N-heterocyclic carbene influences the catalytic activity of the resulting ruthenium complexes.
创建时间：
2012-09-24
