翻訳と辞書 Words near each other ・ Bogen, Austra ・ Bogen, Evenes ・ Bogen, Germany ・ Bogen, Steigen ・ Bogenbay Batyr ・ Bogenfels ・ Bogenhausen ・ Bogenhauser Künstlerkapelle ・ Bogenhofen Seminary ・ Bogense ・ Bogense Municipality ・ Bogensee ・ Bogenšperk Castle ・ Bogenšperk, Šmartno pri Litiji ・ Boger City, North Carolina ・ Boger pyridine synthesis ・ Boger-Hartsell Farm ・ Bogert ・ Bogert Covered Bridge ・ Bogert House ・ Bogert House (Bogota, New Jersey) ・ Bogert House (Demarest, New Jersey) ・ Bogert's coral snake ・ Bogert's gecko ・ Bogertophis ・ Bogerud ・ Bogerud (station) ・ Bogess Creek ・ BOGESTRA ・ Bogesund Castle 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 Boger pyridine synthesis ： ウィキペディア英語版 Boger pyridine synthesis The Boger pyridine synthesis is a cycloaddition approach to the formation of pyridines named after its inventor Dale L. Boger, who first reported it in 1981. The reaction is a form of inverse-electron demand Diels-Alder reaction in which an enamine reacts with a 1,2,4-triazine to form the pyridine nucleus. The reaction is especially useful for accessing pyridines that would be difficult or impossible to access via other methods and has been used in the total synthesis of several complicated natural products. ==Mechanism== The enamine is generally generated ''in situ'' from catalytic amine (such as pyrrolidine) and a ketone. The enamine then reacts as the dienophile with a 1,2,4-triazine. The initial adduct then expels nitrogen, and the pyridine is rearomatized with loss of the amine. 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「Boger pyridine 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.