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Updated: Sep 9, 2025

Preparation of a Corannulene-functionalized Hexahelicene by CopperI-catalyzed Alkyne-azide Cycloaddition of Nonplanar Polyaromatic Units
09:35

Preparation of a Corannulene-functionalized Hexahelicene by CopperI-catalyzed Alkyne-azide Cycloaddition of Nonplanar Polyaromatic Units

Published on: September 18, 2016

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トポロジカル・キラルのステレオセレクティブ・セルフ・アセンブリ [6]18の交差点を持つカテネン

Zheng Cui1,2, Li-Yan Hao1, Yi-Fan Yuan1

  • 1Key Laboratory of Green Chemical Media and Reactions (Ministry of Education), Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P.R. China.

Angewandte Chemie (International ed. in English)
|September 1, 2025
PubMed
まとめ

研究者は,新しいステレオ選択的自己組み立て方法を使用して,機械的に相互接続された分子 (MIM) の種類である複雑な,トポロジカルにキラルな [6]カテナンを合成した. この突破により トポロジカル・キラリティを制御した 複雑な分子構造が作れます

キーワード:
カテネンコーディネーション駆動式自己組み立て半サンドイッチ型の有機金属構造非共性相互作用トポロジカル・キラリティ

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Stereoisomerism of Cyclic Compounds

In this lesson, we delve into the role of ring conformation and its stability, which determines the spatial arrangement and, consequently, the molecular symmetry and stereoisomerism of cyclic compounds. 1,2-Dimethylcyclohexane is used as a case study to evaluate the possible number of stereoisomers. Here, given the multiple (n = 2) chiral centers, there are 2n = 4 possible configurations that lack a plane of symmetry, as the ring skeleton exists in a non-planar chair conformation. In addition,...
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Cycloheptatriene is a neutral monocyclic unsaturated hydrocarbon that consists of an odd number of carbon atoms and an intervening sp3 carbon in the ring. The three double bonds in the ring correspond to 6 π electrons, which is a Huckel number, and therefore satisfies the criteria of 4n + 2 π electrons. However, the intervening sp3 carbon disrupts the continuous overlap of p orbitals. As a result, cycloheptatriene is not aromatic.
Removing one hydrogen from the intervening CH2 group...
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