翻訳と辞書 Words near each other ・ Selenophanes cassiope ・ Selenophoma linicola ・ Selenophorus ・ Selenophosphate synthetase 1 ・ Selenoplexia ・ Selenoprotein ・ Selenoprotein P ・ Selenops ・ Selenops rosario ・ Selenosteidae ・ Selenosteus ・ Selenotichnus ・ Selenotypus ・ Selenourea ・ Selenous acid ・ Selenoxide elimination ・ Selenoyl fluoride ・ Selens ・ Selent ・ Selent/Schlesen ・ Selenter See ・ Selenča ・ Selepet language ・ Selepressin ・ Selerd ・ Selero ・ Seles ・ Seles, Angola ・ Selespeed ・ Selestino Babungi 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 Selenoxide elimination ： ウィキペディア英語版 Selenoxide elimination Selenoxide elimination (also called α-selenation) is a method for the chemical synthesis of alkenes from selenoxides. It is most commonly used to synthesize α,β-unsaturated carbonyl compounds from the corresponding saturated analogues.〔Reich, H. J.; Wollowitz, S. ''Org. React.'' 1993, ''44'', 1. 〕 == Mechanism and stereochemistry == After the development of sulfoxide elimination as an effective method for generating carbon–carbon double bonds, it was discovered that selenoxides undergo a similar process, albeit much more rapidly. Most selenoxides decompose to the corresponding alkenes at temperatures between −50 and 40 °C. Evidence suggests that the elimination is ''syn''; however, epimerization at both carbon and selenium (both of which are stereogenic) may occur during the reaction. As selenoxides can be readily prepared from nucleophilic carbonyl derivatives (enols and enolates), selenoxide elimination has grown into a general method for the preparation of α,β-unsaturated carbonyl compounds. ''(1)''File:SelenGen.png 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「Selenoxide elimination」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.