翻訳と辞書 Words near each other ・ WAGR R class (diesel) ・ WAGR S class ・ WAGR S class (1888) ・ WAGR syndrome ・ WAGR T class ・ WAGR T class (diesel) ・ WAGR U class ・ WAGR U class (1903) ・ WAGR V class ・ WAGR W class ・ WAGR WCA/WCE class ・ WAGR X class ・ Wagner, Pennsylvania ・ Wagner, South Dakota ・ Wagner, Wisconsin ・ Wagner-Jauregg reaction ・ Wagner-Murray-Dingell Bill ・ Wagner-Werk-Verzeichnis ・ Wagneria ・ Wagneria costata ・ Wagnerian rock ・ Wagnerism ・ Wagnerite ・ Wagners, California ・ Wagnerówka ・ Wagner–Fischer algorithm ・ Wagner–Hatfield amendment ・ Wagner–Meerwein rearrangement ・ Wagner–Ritter House & Garden ・ Wagner–Rogers Bill 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 Wagner-Jauregg reaction ： ウィキペディア英語版 Wagner-Jauregg reaction The Wagner-Jauregg reaction is a classic organic reaction in organic chemistry, named after Theodor Wagner-Jauregg, describing the double Diels–Alder reaction of 2 equivalents of maleic anhydride with a 1,1-diarylethylene. After aromatization of the bis-adduct, the ultimate reaction product is a naphthalene compound with one phenyl substituent. The reaction is unusual in that the anhydride reacts with the aromatic ring. The presence of the additional alpha-phenyl group on the phenylethene (the styryl group) activates the styryl for a Diels–Alder reaction even at the expense of its aromaticity. In contrast, unactivated styrene reacts instead at the alkene alone via a linear polymerization reaction. Styrene maleic anhydride copolymer is formed, retaining the aromaticity of the styrene. The Diels–Alder product can be re-aromatized using elemental sulfur at high temperature, followed by a second rearomatization by decarboxylation with barium hydroxide and copper: ==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「Wagner-Jauregg reaction」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.