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Updated: Jun 13, 2026

A Simple and Efficient Protocol for the Catalytic Insertion Polymerization of Functional Norbornenes
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A Simple and Efficient Protocol for the Catalytic Insertion Polymerization of Functional Norbornenes

Published on: February 27, 2017

エチレンとオクテンの分子間挿入により,パラジアム-アミド結合が形成されます. エチレンアミドの中間物質のスペクトル学的証拠

Patrick S Hanley1, Dean Marković, John F Hartwig

  • 1Department of Chemistry, University of Illinois, 600 South Mathews Avenue, Urbana, Illinois 61801, USA.

Journal of the American Chemical Society
|April 23, 2010
PubMed
まとめ

パラジウム・ダイアリラミド複合体は,アルケンの移動挿入によってエナミンの形成を触媒化する. 反応速度は,ダイアリラミドリガンドの電子特性によって著しく影響を受けます.

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Raman and IR Spectroelectrochemical Methods as Tools to Analyze Conjugated Organic Compounds

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Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)

Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear unsaturated polymer and ethylene. As ADMET is a reversible process, the formed ethylene gas must be removed from the reaction mixture to complete the polymerization process.
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
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π Molecular Orbitals of 1,3-Butadiene

Conjugated dienes have lower heats of hydrogenation than cumulated and isolated dienes, making them more stable. The enhanced stabilization of conjugated systems can be understood from their π molecular orbitals.
The simplest conjugated diene is 1,3-butadiene: a four-carbon system where each carbon is sp2-hybridized and has an unhybridized p orbital that contains an unpaired electron. According to molecular orbital theory, atomic orbitals combine to form molecular orbitals such that the number...
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[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction

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Electrophilic 1,2- and 1,4-Addition of X2 to 1,3-Butadiene

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Thermal and Photochemical Electrocyclic Reactions: Overview

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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