Synthesis using pyridinium N-ylides. I. Synthesis and some reactions of substituted 1-(acetylimino)pyridinium ylides.
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概要
- 論文の詳細を見る
Pyridinium <I>N</I>-imines reacted smoothly with diethyl malonate and ethyl cyanoacetate in ethanol at room temperature to give the corresponding 1-(ethoxycarbonylacetylimino)- and 1-(cyanoacetylimino)pyridinium ylides in 59–87% yields. These ylides were converted to 1-(acetylimino)pyridinium ylide derivatives by the treatment with acetic anhydride. The alkaline treatment of the pyridinium salts which were prepared by the alkylation of the <I>N</I>-ylides with alkyl halides, gave the corresponding 3-ethoxycarbonyl- and 3-cyano-1,2-dihydropyrazolo-[1,5-<I>a</I>]pyridin-2-one derivatives in 8–51% yields.
- 公益社団法人 日本化学会の論文
著者
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Kakehi Akikazu
Department Of Chemistry And Material Engineering Faculty Of Engineering Shinshu University
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Ito Suketaka
Department of Applied Chemistry Faculty of Engineering Nagoya University
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Maeda Toshiaki
Department of Engineering Science, Junior College Funabashi Campus, Nihon University
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Maeda Toshiaki
Department of Industrial Chemistry, Faculty of Engineering, Shinshu University
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Konno Yoshiaki
Department of Industrial Chemistry, Faculty of Engineering, Shinshu University
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