Reaction of sulfur dichloride with nitrile in the presence of Lewis acid forming 1,2,4-thiadiazole.
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概要
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Formation of 3,5-disubstituted 1,2,4-thiadiazoles by the reaction of sulfur dichloride with nitriles in the presence of a Lewis acid was found. For example, 3,5-diphenyl-1,2,4-thiadiazole was obtained with its chlorinated products, 3-<I>o</I>-chlorophenyl-5-phenyl- and 3-<I>p</I>-chlorophenyl-5-phenyl-1,2,4-thiadiazoles, from benzonitrile and sulfur dichloride using aluminium chloride as a catalyst (total yield 80%). The extent of chlorination of the aromatic ring was suppressed by use of iron(III) chloride as the catalyst or of sulfur chloride instead of the dichloride. Some substituted benzonitriles and pivalonitrile also gave thiadiazoles in lower yields.
- 公益社団法人 日本化学会の論文
著者
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Komatsu Mitsuo
Department Of Applied Chemistry Faculty Of Engineering Osaka University
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Ohshiro Yoshiki
Department Of Applied Chemistry Faculty Of Engineering Osaka University
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Komatsu Mitsuo
Department of Petroleum Chemistry, Faculty of Engineering, Osaka University
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Shibata Jun-ichi
Department of Petroleum Chemistry, Faculty of Engineering, Osaka University
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Agawa Toshio
Department of Petroleum Chemistry, Faculty of Engineering, Osaka University
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Agawa Toshio
Department of Applied Chemistry, Faculty of Engineering, Osaka University
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Ohshiro Yoshiki
Department of Petroleum Chemistry, Faculty of Engineering, Osaka University
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