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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Functionalized cyclopentadienyl rhodium(iii) bipyridine complexes: Synthesis, characterization, and catalytic application in hydrogenation of ketones
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Functionalized cyclopentadienyl rhodium(iii) bipyridine complexes: Synthesis, characterization, and catalytic application in hydrogenation of ketones

机译：功能化的环戊二烯基铑（iii）联吡啶配合物：酮的加氢合成，表征和催化应用

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摘要

A series of highly functionalized cyclopentadienyl rhodium(iii) complexes, [Cp′Rh(bpy)Br](ClO_4) (Cp′ = substituted cyclopentadienyl), was synthesized from various multi-substituted cyclopentadienes (Cp′H). [Rh(cod)Cl]_2 and Cp′H were firstly converted to [Cp′Rh(cod)] complexes, which were then treated with Br2 to give the rhodium(iii) dibromides [Cp′RhBr _2]_2. The novel complexes [Cp′Rh(bpy)Br](ClO _4) were obtained readily by the reaction of 2,2′-bipyridine with [Cp′RhBr_2]_2. These rhodium complexes [Cp′Rh(bpy)Br](ClO_4) were fully characterized and utilized in the hydrogenation of cyclohexanone and acetophenone with generally high yields, but they did not exhibit the same reactivity trends for the two substrate ketones. The different activity of these complexes for the different substrates may be due to the influence of the substituents on the Cp′ rings.
机译：由各种多取代的环戊二烯（Cp'H）合成了一系列高度官能化的环戊二烯基铑（iii）配合物[Cp'Rh（bpy）Br]（ClO_4）（Cp'=取代的环戊二烯基）。首先将[Rh（cod）Cl] _2和Cp'H转化为[Cp'Rh（cod）]配合物，然后用Br2处理得到二溴化铑（iii）[Cp'RhBr _2] _2。通过2,2'-联吡啶与[Cp'RhBr_2] _2的反应可轻松获得新型络合物[Cp'Rh（bpy）Br]（ClO _4）。这些铑配合物[Cp'Rh（bpy）Br]（ClO_4）得到了充分表征，并用于环己酮和苯乙酮的氢化反应中，通常收率很高，但对于两种底物酮却没有相同的反应趋势。这些配合物对不同底物的不同活性可能是由于取代基对Cp'环的影响。

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