High-Activity Iron Catalysts for the Hydrogenation of Hindered, Unfunctionalized Alkenes.
High-Activity Iron Catalysts for the Hydrogenation of Hindered, Unfunctionalized Alkenes.
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DOI：
10.1021/cs300358m
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发表时间：
2012
期刊：
影响因子：
12.9
通讯作者：
Chirik PJ
中科院分区：
文献类型：
--
作者：
Yu RP;Darmon JM;Hoyt JM;Margulieux GW;Turner ZR;Chirik PJ
研究了芳基取代的双亚氨基吡啶和双亚芳基咪唑吡啶铁二氮配合物在催化烯烃加氢反应中的催化活性。通常，具有较小的2，6-芳基取代基的更多的给电子螯合物产生更活性的铁氢化催化剂。这种结构-活性关系的建立已经产生了贱金属催化剂，其对于非官能化的、三取代和四取代的烯烃的氢化表现出高转换频率，这是均相氢化催化剂最具挑战性的底物类别之一。
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-activity 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 homogenous hydrogenation catalysts.