Improved Syntheses of Versatile Ruthenium Hydridocarbonyl Catalysts Containing Electron-Rich Ancillary Ligands
Improved Syntheses of Versatile Ruthenium Hydridocarbonyl Catalysts Containing Electron-Rich Ancillary Ligands
复制标题
含有富电子辅助配体的多功能氢化羰基钌催化剂的改进合成
DOI：
10.1002/adsc.200800056
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发表时间：
2008
影响因子：
5.4
通讯作者：
D. E. Fogg
中科院分区：
文献类型：
--
作者：
N. Beach;U. L. Dharmasena;Samantha D. Drouin;D. E. Fogg
建立了重要催化剂氯（三环己基膦）钌氢化羰基[RuHCl(CO)(PCy3)2] 2及其n -杂环羰基（NHC）衍生物RuHCl(CO)(NHC)(PCy3) （3a: NHC= ime; 3b， NHC= h2ime; ime =1,3-维咪唑-2-乙基）的清洁、高产路线。这些配合物是用三环己基膦[PCy3]或适当的NHC配体，再用PCy3处理三（三环己基膦）钌羟基羰基[RuHCl(CO)(PPh3)3] 1得到的。与以前的路线相比，这些配合物的优点在于从一个方便的前体中获得高收率，没有其他难以去除的副产物，并且在实验方便的条件下反应时间短。
Clean, high-yield routes are established to the important catalyst chlorobis(tricyclohexylphosphine)ruthenium hydridocarbonyl [RuHCl(CO)(PCy3)2] 2 and its N-heterocyclic carbene (NHC) derivatives RuHCl(CO)(NHC)(PCy3) (3a: NHC=IMes; 3b, NHC=H2IMes; IMes=1,3-dimesitylimidazol-2-ylidene). These complexes are obtained by treating chlorotris(tricyclohexylphosphine)ruthenium hydridocarbonyl [RuHCl(CO)(PPh3)3] 1 with tricyclohexylphosphine [PCy3], or with the appropriate NHC ligand, then PCy3. Advantages over prior routes to these complexes lie in the high yields from a conveniently accessible precursor, the absence of by-products that otherwise prove difficult to remove, and the short reaction times under experimentally convenient conditions.