Ionophilic Phosphines: Versatile Ligands for Ionic Liquid Biphasic Catalysis

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• 作者：Crestina S. Consorti ; Guilherme L. P. Aydos ; Gü ; nter Ebeling ; Ja&iuml ; rton Dupont
• 刊名：Organic Letters
• 出版年：2008
• 出版时间：January 17, 2008
• 年：2008
• 卷：10
• 期：2
• 页码：237 - 240
• 全文大小：98K
• 年卷期：v.10,no.2(January 17, 2008)
• ISSN：1523-7052

文摘

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Phosphine ligands bearing an imidazolium fragment were easily prepared by one-step radical chain addition of secondary phosphines to allylor vinyl imidazolium salts. These ligands were used to prepare new ionophilic second generation Grubbs-type catalysts. The catalyst immobilizedin 1-butyl-3-methyl imidazolium ILs shows good catalytic activity in RCM reactions of several substrates and, depending on the media employed,is stable up to eight cycles.