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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Baker–Venkataraman rearrangement ： ウィキペディア英語版 Baker–Venkataraman rearrangement The Baker–Venkataraman rearrangement is the chemical reaction of 2-acetoxyacetophenones with base to form 1,3-diketones. This rearrangement reaction proceeds via enolate formation followed by acyl transfer. It is named after the scientists Wilson Baker and Krishnasami Venkataraman. The Baker–Venkataraman rearrangement is often used to synthesize chromones and flavones.〔 ''(also in the (Collective Volume (1963) 4:　478 (PDF) )).''〕 == Mechanism == A base abstracts the hydrogen atom alpha to the aromatic ketone, forming an enolate. Then, the enolate attacks the ester carbonyl to form a cyclic alkoxide. The cyclic intermediate is opened up to form a more stable phenolate, which is protonated during acidic work-up to give the desired product. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Baker–Venkataraman rearrangement」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.