高活性钌复分解催化剂表现出前所未有的活性和 Z-选择性。
Highly active ruthenium metathesis catalysts exhibiting unprecedented activity and Z-selectivity.
机构信息
Arnold and Mabel Beckman Laboratory of Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA.
出版信息
J Am Chem Soc. 2013 Jan 30;135(4):1276-9. doi: 10.1021/ja311916m. Epub 2013 Jan 17.
Abstract
A novel chelated ruthenium-based metathesis catalyst bearing an N-2,6-diisopropylphenyl group is reported and displays near-perfect selectivity for the Z-olefin (>95%), as well as unparalleled TONs of up to 7400, in a variety of homodimerization and industrially relevant metathesis reactions. This derivative and other new catalytically active species were synthesized using an improved method employing sodium carboxylates to induce the salt metathesis and C-H activation of these chelated complexes. All of these new ruthenium-based catalysts are highly Z-selective in the homodimerization of terminal olefins.
摘要
报告了一种新型的螯合钌基复分解催化剂，带有 N-2,6-二异丙基苯基基团，在各种同二聚化和工业相关的复分解反应中，对 Z-烯烃（>95%）具有近乎完美的选择性，TON 高达 7400。该衍生物和其他新的催化活性物质是使用一种改进的方法合成的，该方法使用羧酸钠盐诱导这些螯合配合物的盐复分解和 C-H 活化。所有这些新型的基于钌的催化剂在末端烯烃的同二聚化中都具有高度的 Z-选择性。
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