Electrocyclic reaction

Japanese: electrocyclic reaction(英語表記)electrocyclicreaction
Electrocyclic reaction

...These are broadly classified into three categories: (a) rearrangements occurring in neutral molecules, (b) rearrangements occurring in cationic systems, and (c) rearrangements occurring in anionic systems. In the case of (1), there are the Cope rearrangement (formula (1)) and the Claisen rearrangement (formula (2)), which are types of electrocyclic reactions (see the Woodward-Hoffmann rule). A typical example of a rearrangement reaction that can be classified into (chemical formula)(2) is the rearrangement in carbenium ions. ...

*Some of the terminology that mentions "electrocyclic reaction" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…これらは大別して,(a)中性分子で起こる転位,(b)カチオン系で起こる転位,(c)アニオン系で起こる転位,の三つに分類される。(1)の場合,コープ転位(式(1)),クライゼン転位(式(2))などがあり,これらは電子環状反応electrocyclic reaction(〈ウッドワード=ホフマン則〉の項参照)の一種である。(化学式)(2)に分類できる転位反応の代表例として,カルベニウムイオンにおける転位がある。…

※「electrocyclic reaction」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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