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Shestopalov AM Emeliyanova YM Shestopalov AA Rodinovskaya LA Niazimbetova ZI Evans DH 《Organic letters》2002,4(3):423-425
Three-component condensation of 4-piperidinones (7), 5-pyrazolones (8), and malononitrile (4) proceeds chemically and electrochemically and is a convenient one-step means of synthesis of substituted 6-amino-5-cyanospiro-4-(piperidine-4')-2H,4H-dihydropyrazolo[3,4-b]pyrans (12). The electrochemical reactions proceed under milder conditions and with yields 12-15% greater than those of the reactions catalyzed by chemical bases. 相似文献
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Kazak A. V. Kirillov A. A. Simonchik L. V. Vabishchevich A. M. Kuraica M. M. Obradovich B. M. Sretenovich G. B. Jabrouskaya A. I. Emeliyanova O. A. Dudchik N. V. 《Journal of Applied Spectroscopy》2021,88(2):293-298
Journal of Applied Spectroscopy - The component composition of plasma jets generated by a dielectric barrier discharge in helium and air at atmospheric pressure was studied by emission and... 相似文献
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Anatoliy M ShestopalovYuliya M Emeliyanova Aleksandr A ShestopalovLyudmila A Rodinovskaya Zukhra I NiazimbetovaDennis H Evans 《Tetrahedron》2003,59(38):7491-7496
To develop a method of synthesis of the potentially physiologically active compounds, 1′-substituted 6-amino-spiro-4-(piperidine-4′)-2H,4H-pyrano[2,3-c]pyrazoles, we studied the three-component condensation of substituted piperidin-4-ones, malononitrile and pyrazolin-5-ones. It was found that the electrochemical method of synthesis is more regioselective, the products of the reaction are analytically pure and do not require further recrystallization. 相似文献
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