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Updated: Sep 18, 2025

Microwave-assisted Intramolecular Dehydrogenative Diels-Alder Reactions for the Synthesis of Functionalized Naphthalenes/Solvatochromic Dyes
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Microwave-assisted Intramolecular Dehydrogenative Diels-Alder Reactions for the Synthesis of Functionalized Naphthalenes/Solvatochromic Dyes

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調節可能で不対称な1,4-ディボラントラセンの前駆体として,高反芳香性ナフト-1,2-ディボレート

Marco Neder1,2, Merle Arrowsmith1,2, Lukas Endres1,2

  • 1Institute for Inorganic Chemistry, Julius-Maximilians University of Würzburg, Am Hubland, 97074 Würzburg, Germany.

Journal of the American Chemical Society
|June 19, 2025
PubMed
まとめ

研究者は,閉殻4π抗芳香化合物である新しいN-ヘテロサイクルカルベン (NHC) 安定した1,2-ジボレットを合成した. これらのディボレートはアルキンと反応して芳香的1,4-ディボラアントラセンを形成し,オルガノボロン化学の範囲を拡大する.

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Like benzene, cyclobutadiene and cyclooctatetraene are cyclic compounds with alternate single and double bonds. However, their chemical behavior differs from benzene, as they are unstable and not aromatic. So, what are the structural characteristics of unsaturated compounds categorized as aromatic?  
For the first time, Eric Hückel, a German chemical physicist, derived a set of structural features for a compound to be classified as aromatic. This is now known as...
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The inscribed polygon method is consistent with Hückel’s 4n + 2 rule and helps to learn whether the given cyclic compound is aromatic or not. The compound is stable and aromatic if every bonding molecular orbital (MO) is completely filled with a pair of electrons. However, if the non-bonding or antibonding orbitals are filled with electrons, the compound is unstable and not aromatic. Consider the Frost circle diagrams for cycloalkenes containing 4 to 8 carbons.
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