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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Meyers synthesis ： ウィキペディア英語版 Meyers synthesis The Meyers synthesis is an organic synthesis for the preparation of unsymmetrical aldehydes via hydrolysis of an oxazine.〔''Aldehydes from dihydro-1,3-oxazines. I. Synthesis of aliphatic aldehydes and their C-1 deuterated derivatives'' Albert I. Meyers, Aiko Nabeya, H. Wayne Adickes, Ieva R. Politzer J. Am. Chem. Soc. 1969; 91(3); 763-764. 〕〔''Aldehydes from dihydro-1,3-oxazines. II. Synthesis of .alpha.,.beta.-unsaturated aldehydes and their C-1 deuterated derivatives'' Albert I. Meyers, Aiko Nabeya, H. Wayne Adickes, J. Michael Fitzpatrick, G. Ray Malone, and Ieva R. Politzer pp 764 - 765; J. Am. Chem. Soc. 1969 〕〔''Aldehydes from dihydro-1,3-oxazines. III. Synthesis of cycloalkanecarboxaldehydes'' Albert I. Meyers, H. Wayne Adickes, Ieva R. Politzer, and Warren N. Beverung pp 765 - 767; J. Am. Chem. Soc. 1969 〕〔Organic Syntheses, Coll. Vol. 6, p.905 (1988); Vol. 51, p.24 (1971). http://www.orgsynth.org/orgsyn/pdfs/CV6P0905.pdf〕 The reaction is named after the American chemist Albert I. Meyers. : The starting compound is a dihydro-1,3-oxazine with an alkyl group in the 2 position. The alpha proton is acidic and can be abstracted by a strong base such as butyl lithium and subsequently alkylated by an alkyl halide (haloalkane). In the next step the nitrogen to carbon double bond (imine) is reduced with sodium borohydride and the resulting oxazine (a hemiaminal) hydrolyzed with water and oxalic acid to the aldehyde. ==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「Meyers 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.