High-Activity Iron Catalysts for the Hydrogenation of Hindered, Unfunctionalized Alkenes
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- 作者：Renyuan Pony Yu ; Jonathan M. Darmon ; Jordan M. Hoyt ; Grant W. Margulieux ; Zo毛 R. Turner ; Paul J. Chirik
- 刊名：ACS Catalysis
- 出版年：2012
- 出版时间：August 3, 2012
- 年：2012
- 卷：2
- 期：8
- 页码：1760-1764
- 全文大小：263K
- 年卷期：v.2,no.8(August 3, 2012)
- ISSN：2155-5435
文摘
The activity of aryl-substituted bis(imino)pyridine and bis(arylimidazol-2-ylidene)pyridine iron dinitrogen complexes has been evaluated in a series of catalytic olefin hydrogenation reactions. In general, more electron-donating chelates with smaller 2,6-aryl substituents produce more active iron hydrogenation catalysts. Establishment of this structure鈥揳ctivity relationship has produced base metal catalysts that exhibit high turnover frequencies for the hydrogenation of unfunctionalized, tri- and tetrasubstituted alkenes, one of the most challenging substrate classes for homogeneous hydrogenation catalysts.