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Updated: May 27, 2026

Ethylene Polymerizations Using Parallel Pressure Reactors and a Kinetic Analysis of Chain Transfer Polymerization
07:28

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Published on: November 27, 2015

ビピリジルPt (II) 複合体によって触媒化されたエチレンヒドロフェニル化のメカニズム研究

Bradley A McKeown1, Hector Emanuel Gonzalez, Max R Friedfeld

  • 1Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA.

Journal of the American Chemical Society
|November 9, 2011
PubMed
まとめ

カチオンプラチナ ((II) 複合体は,エチレンヒドロフェニル化を効果的に触媒化し,エアロビック条件下でも高い効率でアルキルアレンを生成します. 機械学的研究は,エチレン調整,挿入,およびベンゼンC-H活性化を含む経路を明らかにし,DFT計算はC-H活性化を速度制限ステップとして特定しています.

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Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation

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Like alkenes, alkynes can be reduced to alkanes in the presence of transition metal catalysts such as Pt, Pd, or Ni. The reaction involves two sequential syn additions of hydrogen via a cis-alkene intermediate.
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The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
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Selection Rules: Thermal Activation
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Reduction of Alkenes: Catalytic Hydrogenation

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Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the surface of...