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Updated: May 21, 2026

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
09:45

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

Published on: March 20, 2017

エンドオンテンプレートによる支援によるリモートメタ-C-Hボンドの有効化

Dasheng Leow1, Gang Li, Tian-Sheng Mei

  • 1Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA.

Nature
|June 29, 2012
PubMed
まとめ

研究者は,選択的な炭素-水素 (C-H) 結合機能化のための新しいニトリルテンプレートを開発しました. これらのテンプレートは,遠隔のメタ-C-H結合の活性化を可能にし,従来のオーソ選択的方法の限界を克服します.

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Photogeneration of N-Heterocyclic Carbenes: Application in Photoinduced Ring-Opening Metathesis Polymerization

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All meta-directing substituents are deactivating groups. These substituents withdraw electrons from the aromatic ring, making the ring less reactive toward electrophilic substitution. For example, the nitration of nitrobenzene is 100,000 times slower than that of benzene because of the deactivating effect of the nitro group. The first step in an electrophilic aromatic substitution is the addition of an electrophile to form a resonance-stabilized carbocation. The energy diagrams for the...
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