翻訳と辞書 Words near each other ・ Diego Antón ・ Diego Aracena International Airport ・ Diego Aranega ・ Diego Archuleta ・ Diecast Model World ・ Diecast Sampler ・ Diece ・ Diechterhorn ・ Dieci ・ Dieci canzoni d'amore da salvare ・ Dieci stratagemmi ・ Dieciocho de Julio ・ Dieciu River ・ Dieck ・ Dieckmann ・ Dieckmann condensation ・ Dieckol ・ Diectomis ・ Died (song) ・ Died for Your Sins ・ Died in the Wool ・ Died Pretty ・ Died Young Stayed Pretty ・ Dieden, Demen en Langel ・ Diedendorf ・ Diedenshausen ・ Diederich ・ Diederich College of Communication ・ Diederich Franz Leonhard von Schlechtendal ・ Diederich Hinrichsen 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 Dieckmann condensation ： ウィキペディア英語版 Dieckmann condensation The Dieckmann condensation is the intramolecular chemical reaction of diesters with base to give β-ketoesters.〔Dieckmann, W. ''Ber.'' 1894, ''27'', 102 & 965〕〔Dieckmann, W. ''Ber.'' 1900, ''33'', 595 & 2670〕〔Dieckmann, W. ''Ann.'' 1901, ''317'', 51 & 93〕〔Davis, B. R.; Garrett, P. J. ''Comp. Org. Syn.'' 1991, ''2'', 806-829. (Review)〕 It is named after the German chemist Walter Dieckmann (1869–1925). The equivalent intermolecular reaction is the Claisen condensation. : ==Reaction Mechanism== The acidic hydrogen between the two carbonyl groups is deprotonated in step four. Protonation with a Brønsted-Lowry acid (H3O+ for example) re-forms the β-keto ester. This deprotonation step is the driving force for this reaction. : Owing to the steric stability of five- and six-membered ring structures, these will preferentially be formed. 1,4- and 1,6 diesters will form five-membered cyclic β-keto esters, while 1,5- and 1,7 diesters will form six-membered β-keto esters.〔(【引用サイトリンク】 Dieckmann Condensation )〕 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「Dieckmann condensation」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.