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Updated: Apr 6, 2026

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
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Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene

Published on: March 20, 2017

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イソニトリルをディフォスファディアザンジルに挿入することによって生成される調節可能なサイクロペンタン-1,3-ジル

Alexander Hinz1, Axel Schulz1,2, Alexander Villinger1

  • 1†Institut für Chemie, Abteilung Anorganische Chemie, Universität Rostock, Albert-Einstein-Straße 3a, 18059 Rostock, Germany.

Journal of the American Chemical Society
|July 24, 2015
PubMed
まとめ

ディフォスファディアザネジルはイソニトリルと反応し,ビラジカルな平面ヘテロサイクルを形成する. これらの化合物は,ビサイクロペンタンを生成したり,さらに反応を起こすことができ,複雑なバイサイクルヘテロサイクルを形成する際の多用途反応性を示します.

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Cycloadditions are one of the most valuable and effective synthesis routes to form cyclic compounds. These are concerted pericyclic reactions between two unsaturated compounds resulting in a cyclic product with two new σ bonds formed at the expense of π bonds. The [4 + 2] cycloaddition, known as the Diels–Alder reaction, is the most common. The other example is a [2 + 2] cycloaddition.
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Conjugated dienes are compounds characterized by the presence of alternating double and single bonds. In a conjugated system like 1,3-butadiene, the unhybridized 2p orbital on each carbon overlaps continuously, allowing the π electrons to be delocalized across the entire molecule. In contrast, this type of overlap does not occur in cumulated and isolated dienes, such as 2,3-pentadiene and 1,4-pentadiene, respectively. Instead, the π electrons remain localized between the double...
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Removing one hydrogen from the intervening CH2 group...
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