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Updated: Jun 28, 2026

Preparation of a Corannulene-functionalized Hexahelicene by Copper(I)-catalyzed Alkyne-azide Cycloaddition of Nonplanar Polyaromatic Units
09:35

Preparation of a Corannulene-functionalized Hexahelicene by Copper(I)-catalyzed Alkyne-azide Cycloaddition of Nonplanar Polyaromatic Units

Published on: September 18, 2016

パラマグネティック・エンドヘドラル・メタロフルレネのラ@C82のラジカル結合反応

Yuta Takano1, Akinori Yomogida, Hidefumi Nikawa

  • 1Center for Tsukuba Advanced Research Alliance, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan.

Journal of the American Chemical Society
|November 13, 2008
PubMed
まとめ

ランタン金属フルフルレンは,熱または光照射反応によって選択的機能化され,安定したモノアダクトを形成します. これらの反応は,様々なパラ磁性金属フルフルレンに適用され,その反応性に関する洞察を提供します.

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Radical Reactivity: Overview01:11

Radical Reactivity: Overview

Radicals, the highly reactive species, gain stability by undergoing three different reactions. The first reaction involves a radical-radical coupling, in which a radical combines with another radical, forming a spin‐paired molecule. The second reaction is between a radical and a spin‐paired molecule, generating a new radical and a new spin‐paired molecule. The third reaction is radical decomposition in a unimolecular reaction, forming a new radical and a spin‐paired molecule. These three...
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Cycloaddition Reactions: MO Requirements for Thermal Activation

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¹H NMR: Long-Range Coupling

The coupling interactions of nuclei across four or more bonds are usually weak, with J values less than 1 Hz. While these are usually not observed in spectra, the presence of multiple bonds along the coupling pathway can result in observable long-range coupling.
In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene π orbitals.
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Alkenes via Reductive Coupling of Aldehydes or Ketones: McMurry Reaction

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[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction

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Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)

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