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Updated: Jul 18, 2026

Retropinacol/Cross-pinacol Coupling Reactions - A Catalytic Access to 1,2-Unsymmetrical Diols
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Published on: April 4, 2014

ディトランス[12]アヌルレンを含む反応

Matthew K Kiesewetter1, Matthew N Gard, Richard C Reiter

  • 1Department of Chemistry, Illinois State University, Normal, Illinois 61790-4160, USA.

Journal of the American Chemical Society
|December 7, 2006
PubMed
まとめ

研究者らは,脱水ハロゲン化と環閉反応を通じて,新しいアンヌレンの誘導体を合成した. これらの発見は,複雑なポリサイクル芳香炭化水素の形成と反応性の理解を進める.

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The Diels–Alder reaction is an example of a thermal pericyclic reaction between a conjugated diene and an alkene or alkyne, commonly referred to as a dienophile. The reaction involves a concerted movement of six π electrons, four from the diene and two from the dienophile, forming an unsaturated six-membered ring. As a result, these reactions are classified as [4+2] cycloadditions.
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Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
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The Diels–Alder reaction brings together a diene and a dienophile to form a six-membered ring. Both components have unique characteristics that influence the rate of the reaction.
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The simplest example of a diene is 1,3-butadiene, an acyclic conjugated π system. At room temperature, the molecule exists as a mixture of s-cis and s-trans conformers by virtue of rotation around the carbon–carbon single bond. Although the s-trans isomer is more stable, the...
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When dissolved in liquid ammonia, an alkali metal, such as sodium, dissociates into a...
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