...In carbonium ion systems, carbon atom groups also rearrange, and the carbon skeleton may change, as shown in formula (4). Rearrangements classified as (3) are intramolecular rearrangements of carbanions, and the rearrangement shown in formula (5) is an example of this, called the Wittig rearrangement after its discoverer (Wittig reaction). As with carbonium ions, carbanions also undergo intramolecular skeletal rearrangements. ... *Some of the terminology explanations that mention the "Wittig rearrangement" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…カルボニウムイオン系では炭素原子団も転位し,式(4)に示すように,炭素骨格が変化する場合もある。(3)に分類される転位はカルボアニオンの分子内転位で,式(5)に示される転位はその一例で,発見者にちなんでウィティヒ転位と呼ばれる(ウィティヒ反応)。カルボニウムイオンの場合と同様にカルボアニオンでも分子内骨格転位を起こす。… ※「ウィティヒ転位」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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