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Updated: Jul 16, 2025

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes
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Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes

Published on: June 24, 2022

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一种基于π-π堆叠相互作用的催化系统,用于基因水化反应,用于基因替代黄金NHC催化剂和两性聚合物之间的π-π堆叠相互作用

Bengi Özgün Öztürk1, Hilal Acar1, Ayşegül Balcı1

  • 1Hacettepe University, Faculty of Science, Chemistry Department, 06800, Beytepe, Ankara, Turkey. bengi04@hacettepe.edu.tr.

Dalton transactions (Cambridge, England : 2003)
|September 12, 2023
PubMed
概括

两性聚合物稳定了黄金NHC复合物,使用pyrene π-π堆叠,形成微粒. 这种支持的催化剂在基因水化反应中表现更好,与未支持的催化剂相比.

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相关概念视频

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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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Analogous to alkenes, alkynes also undergo acid-catalyzed hydration. While the addition of water to an alkene gives an alcohol, hydration of alkynes produces different products such as aldehydes and ketones.       
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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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One of the convenient methods for the preparation of aldehydes and ketones is via hydration of alkynes. Hydroboration-oxidation of alkynes is an indirect hydration reaction in which an alkyne is treated with borane followed by oxidation with alkaline peroxide to form an enol that rapidly converts into an aldehyde or a ketone. Terminal alkynes form aldehydes, whereas internal alkynes give ketones as the final product.
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Alkenes undergo reduction by the addition of molecular hydrogen to give alkanes. Because the process generally occurs in the presence of a transition-metal catalyst, the reaction is called catalytic hydrogenation.
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