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Updated: Jun 21, 2026

Preparation and Use of Carbonyl-decorated Carbenes in the Activation of White Phosphorus
14:07

Preparation and Use of Carbonyl-decorated Carbenes in the Activation of White Phosphorus

Published on: October 3, 2014

ビアリルフォスフィン構造がC-NとC-C結合形成に及ぼす影響

Ramendra Pratap1, Damon Parrish, Padmaja Gunda

  • 1Department of Chemistry, The City College and The City University of New York, 160 Convent Avenue, New York, New York 10031, USA.

Journal of the American Chemical Society
|August 7, 2009
PubMed
まとめ

新しいビフェニルフォスフィンリガンドは,室温下でも,核酸化反応におけるC-NとC-C結合形成を効果的に触媒化する. そのユニークな構造は,パラジウム触媒によるクロスカップリング反応における触媒活性を高めるために,電子とステリックの性質を組み合わせている.

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Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions

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Structure and Physical Properties of Alkynes

Introduction:
In nature, compounds containing both carbon and hydrogen are known as "hydrocarbons". Aliphatic hydrocarbons are compounds whose molecules contain saturated single bonds (i.e., alkanes) or unsaturated double or triple bonds. Alkenes contain carbon–carbon double bonds and have a structural formula CnH2n. Unsaturated hydrocarbons containing carbon–carbon triple bonds are called "alkynes" and are structurally represented by the formula CnH2n-2.
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Simple aryl halides do not react with nucleophiles. However, nucleophilic aromatic substitutions can be forced under certain conditions, such as high temperatures or strong bases. The mechanism of substitution under such conditions involves the highly unstable and reactive benzyne intermediate. Benzyne contains equivalent carbon centers at both ends of the triple bond, each of which is equally susceptible to nucleophilic attack. This 50–50 distribution of products is confirmed through isotopic...
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