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Updated: May 3, 2026

Mizoroki-Heck Cross-coupling Reactions Catalyzed by Dichloro{bis[1,1',1''-phosphinetriyltripiperidine]}palladium Under Mild Reaction Conditions
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Mizoroki-Heck Cross-coupling Reactions Catalyzed by Dichloro{bis[1,1',1''-phosphinetriyltripiperidine]}palladium Under Mild Reaction Conditions

Published on: March 20, 2014

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YPhos-Pd触媒とのクロスカップリングのためのオルガノポタシウム反応剤の活用:機会,アプリケーション,および課題

Daniel Knyszek1, Julian Löffler1, David E Anderson2

  • 1Inorganic Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstraße 150, 44801 Bochum, Germany.

Journal of the American Chemical Society
|February 2, 2025
PubMed
まとめ

この研究では,土に豊富に存在するオルガノポタシウム反応剤を用いた新しいパラジウム触媒クロスカップリング法が導入されています. 効率的な反応は室温で進行し,様々な結合製品のグラムスケール合成を可能にします.

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Alkynes to Aldehydes and Ketones: Acid-Catalyzed Hydration

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The Wittig reaction is the conversion of carbonyl compounds-aldehydes and ketones-to alkenes using phosphorus ylides, or the Wittig reagent. The reaction was pioneered by Prof. Georg Wittig, for which he was awarded the Nobel Prize in Chemistry.
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Ketones with α protons are deprotonated by strong bases like lithium diisopropylamide (LDA) to form enolate ions. The anion is stabilized by resonance, and its hybrid structure exhibits negative charges on the carbonyl oxygen and the α carbon. This ambident nucleophile can attack an electrophile via two possible sites: the carbonyl oxygen, known as O-attack, or the α carbon, known as C-attack. The nucleophilic attack via the carbanionic site is preferred. This is due to the...
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