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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 Doering–LaFlamme allene synthesis ： ウィキペディア英語版 Doering–LaFlamme allene synthesis In organic chemistry, the Doering–LaFlamme allene synthesis is a reaction of alkenes that converts them to allenes by insertion of a carbon atom. This name reaction is named for William von Eggers Doering and a co-worker, who first reported it. 500px The reaction is a two-stage process, in which first the alkene is reacted with dichlorocarbene or dibromocarbene to form a dihalocyclopropane. This intermediate is then reacted with a reducing metal, such as sodium or magnesium, or with an organolithium reagent. Either approach converts the dihalogenated carbon to a carbene or carbenoid-like structure. The resulting cyclopropylcarbene rearranges to form the allene product.〔 The electronic nature of the carbene intermediate is not entirely understood. Several different mechanisms for its electrocyclic rearrangement have been studied. == References == 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「Doering–LaFlamme allene synthesis」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.