Electrosynthesis of 2-methyl-1,4-naphthoquinone (vitamin K3) directly from 2-methyl-5,8-dihydro-1,4-naphthalenediol by a four-electron oxidation procedure.
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概要
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A straightforward synthesis of Vitamin K<SUB>3</SUB> was performed by electrolysis of 2-methyl-5,8-dihydro-1,4-naphthalenediol in a MeCN–<I>t</I>-BuOH (9/1)–LiClO<SUB>4</SUB>–(Pt or C electrodes) system. The use of perchlorate salts or tetrafluoroborate salts as supporting electrolytes in various electrolysis systems, such as AcOH–<I>t</I>-BuOH (9/1)–LiClO<SUB>4</SUB>–(Pt) and AcOEt–<I>t</I>-BuOH (9/1)–Bu<SUB>4</SUB>NClO<SUB>4</SUB>–(Pt), also provided good results, while the use of Et<SUB>4</SUB>NOTs in MeOH afforded 2-methyl-5,8-dihydro-1,4-naphthoquinone, preferentially.
- 公益社団法人 日本化学会の論文
著者
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Torii Sigeru
Department Of Applied Chemistry Faculty Of Engineering Okayama University
-
Tanaka Hideo
Department Of Applied Chemistry Faculty Of Engineering Okayama University
-
Nakane Shoji
Department of Industrial Chemistry, School of Engineering, Okayama University
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