翻訳と辞書 Words near each other ・ Dehydroamino acid ・ Dehydroascorbic acid ・ Dehydrocholic acid ・ Dehydrocorybulbine ・ Dehydrocurvularin ・ Dehydrodolichyl diphosphate synthase ・ Dehydroemetine ・ Dehydroepiandrosterone ・ Dehydroepiandrosterone sulfate ・ Dehydrogenase ・ Dehydrogenation ・ Dehydrogenation of amine-boranes ・ Dehydrogenative coupling of silanes ・ Dehydrogluconate dehydrogenase ・ Dehydrogluconokinase ・ Dehydrohalogenation ・ Dehydrohexahydroxydiphenic acid ・ Dehydronorketamine ・ Dehydroretinal ・ Dehydrosecodine ・ Dehyur ・ Dehzanun ・ Dehzir-e Dudera ・ DEI ・ Dei District ・ Dei Filius ・ Dei gesta per Francos ・ Dei Gratia (brigantine) ・ Dei Gratia Regina ・ Dei Hamo Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Dehydrohalogenation ： ウィキペディア英語版 Dehydrohalogenation Dehydrohalogenation is an organic reaction in which alkyl halide when boiled with alcoholic alkali gives corresponding alkene. It is also called a β-Elimination reaction and is a type of elimination reaction. In this reaction, the halogen on the carbon in the alkyl halide reacts with hydrogen present on the β-carbon releasing hydrogen halide. Hence an alkene is formed due to formation of a double bond between the α- and β-carbon. Zaitsev's rule helps to explain regioselectivity for this reaction type. The opposite transformation is called hydrohalogenation. ==Reactions== File:Beta elimination.svg Here ethyl chloride reacts with potassium hydroxide dissolved in ethanol, giving ethene. Likewise, 1-chloropropane and 2-chloropropane give propene. Chlorobenzene does not react with potassium hydroxide due to the presence of the benzene ring, which, due to stabilization as a result of aromaticity, does not give conventional elimination, as it would lead to a very unstable benzyne intermediate. 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「Dehydrohalogenation」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.