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Updated: Jul 18, 2026

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)
08:46

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)

Published on: November 22, 2016

循環性C-アミノリン酸イリドは,移行金属のための二酸化異種型リガンド (フォスフィン/アミノカルベン) の源泉である

Joan Vignolle1, Bruno Donnadieu, Didier Bourissou

  • 1UCR-CNRS Joint Research Chemistry Laboratory (UMI 2957), Department of Chemistry, University of California-Riverside, Riverside, CA 92521-0403, USA.

Journal of the American Chemical Society
|November 16, 2006
PubMed
まとめ

アサイクロンおよびサイクロンC-アミノリン酸イリドは,カルベンおよびフォスフィン移転剤として作用し,ユニークなヘテロディトピックリガンドを持つ新しい金属複合体の合成を可能にします.

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Metal-Ligand Bonds02:51

Metal-Ligand Bonds

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Chirality at Nitrogen, Phosphorus, and Sulfur

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Amines to Amides: Acylation of Amines

Various carboxylic acid derivatives (such as acid chlorides, esters, and anhydrides) can be used for the acylation of amines to yield amides. The reaction requires two equivalents of amines. The first amine molecule functions as a nucleophile and attacks the carbonyl carbon to produce a tetrahedral intermediate. This is followed by the loss of the leaving group and restoration of the C=O bond.
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Aldehydes and Ketones to Alkenes: Wittig Reaction Mechanism

The Wittig reaction, which converts aldehydes or ketones to alkenes using phosphorus ylides, proceeds through a nucleophilic addition‒elimination process.
The reaction begins with the nucleophilic addition between a phosphorus ylide and the carbonyl compound. Due to its carbanionic character, phosphorus ylide acts as a strong nucleophile and attacks the electrophilic carbonyl group. This generates a charge-separated dipolar intermediate called betaine. The negatively charged oxygen atom and...