The high pressure Diels-Alder reactions of 5-methoxy-2-methyl-4-(p-nitrophenyl)oxazole with ethylenic dienophiles.

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概要

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• The high pressure Diels–Alder reactions of 5-methoxy-2-methyl-4-(<I>p</I>-nitrophenyl)oxazole with ethylenic dienophiles such as <I>N</I>-methylmaleimide, <I>N</I>-phenylmaleimide, dimethyl maleate and dimethyl fumarate gave the corresponding adducts in good to excellent yields. The effects of pressure, temperature, solvents on the yields were investigated. The high pressure also increased the formation of 3-hydroxypyridine derivatives via the elimination of methanol from the adducts. The stereospecificity of the reaction was confirmed for the reactions with maleate and fumarate.

• 公益社団法人 日本化学会の論文

著者

• Ibata Toshikazu

  Institute Of Chemistry College Of General Education Osaka University

• Matsumoto Kiyoshi

  College of Liberal Arts and Sciences, Kyoto University

• Isogami Yasushi

  Institute of Chemistry, College of General Education, Osaka University

• Nakawa Hiroyuki

  Institute of Chemistry, College of General Education, Osaka University

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