带有用于离子液体中双相烯烃复分解反应的双阳离子 N-杂环卡宾的格拉布斯-霍维达型催化剂。
Grubbs-Hoveyda type catalysts bearing a dicationic N-heterocyclic carbene for biphasic olefin metathesis reactions in ionic liquids.
作者信息
Koy Maximilian, Altmann Hagen J, Autenrieth Benjamin, Frey Wolfgang, Buchmeiser Michael R
机构信息
Lehrstuhl für Makromolekulare Stoffe und Faserchemie, Institut für Polymerchemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
出版信息
Beilstein J Org Chem. 2015 Sep 15;11:1632-8. doi: 10.3762/bjoc.11.178. eCollection 2015.
The novel dicationic metathesis catalyst [(RuCl2(H2ITapMe2)(=CH-2-(2-PrO)-C6H4))(2+) (OTf(-))2] (Ru-2, H2ITapMe2 = 1,3-bis(2',6'-dimethyl-4'-trimethylammoniumphenyl)-4,5-dihydroimidazol-2-ylidene, OTf(-) = CF3SO3 (-)) based on a dicationic N-heterocyclic carbene (NHC) ligand was prepared. The reactivity was tested in ring opening metathesis polymerization (ROMP) under biphasic conditions using a nonpolar organic solvent (toluene) and the ionic liquid (IL) 1-butyl-2,3-dimethylimidazolium tetrafluoroborate [BDMIM(+)][BF4 (-)]. The structure of Ru-2 was confirmed by single crystal X-ray analysis.
基于双阳离子 N-杂环卡宾（NHC）配体制备了新型双阳离子复分解催化剂[(RuCl2(H2ITapMe2)(=CH-2-(2-PrO)-C6H4))(2+) (OTf(-))2]（Ru-2，H2ITapMe2 = 1,3-双（2',6'-二甲基-4'-三甲基铵苯基）-4,5-二氢咪唑-2-亚基，OTf(-) = CF3SO3 (-)）。在双相条件下，使用非极性有机溶剂（甲苯）和离子液体（IL）1-丁基-2,3-二甲基咪唑四氟硼酸盐[BDMIM(+)][BF4 (-)]，对其在开环易位聚合（ROMP）中的反应活性进行了测试。通过单晶 X 射线分析确定了 Ru-2 的结构。
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