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http://dspace.nuph.edu.ua/handle/123456789/20627| Title: | Recyclization of 2-imino-2H-benzopyrans by the action of nucleophilic reagents 4.* Use of 2-(N-aroylhydrazono)coumarin-3-carboxamides for the synthesis of 3-(1,3,4-oxadiazol-2-yl)coumarins |
| Authors: | Kovalenko, S. N. Sytnik, K. M. Nikitchenko, V. M. Rusanova, S. V. Chernykh, V. P. Porokhnyak, A. O. Коваленко, С. Н. Сытник, К. М. Никитченко, В. М. Русанова, С. В. Черных, В. П. Порохняк, А. О. Коваленко, С. М. Ситнік, К. М. Нікітченко, В. М. Русанова, С. В. Черних, В. П. Порохняк, А. О. |
| Issue Date: | 1999 |
| Bibliographic description (Ukraine): | Recyclization of 2-imino-2H-benzopyrans by the action of nucleophilic reagents 4.* Use of 2-(N-aroylhydrazono)coumarin-3-carboxamides for the synthesis of 3-(1,3,4-oxadiazol-2-yl)coumarins / S. N. Kovalenko, K. M. Sytnik, V. M. Nikitchenko, S. V. Rusanova, V. P. Chernykh, A. O. Porokhnyak // Chemistry of Heterocyclic Compounds. - 1999. - Vol. 35, № 2. - С. 167-170. |
| Abstract: | A new method for the synthesis of 3-(1,3,4-oxadiazol-2-yl)coumarins is proposed. It is based on the recyclization of 2-(N-aroylhydrazono)coumarin-3-carboxamides, which are readily obtained by the reaction of 2-iminocoumarin-3-carboxamides with arenecarboxylic hydrazides in an acidic medium. Advantages of the given method over alternative synthetic schemes were shown. Proposals on the mechanism of reaction were made. |
| URI: | http://dspace.nuph.edu.ua/handle/123456789/20627 |
| Appears in Collections: | Наукові публікації В. П. Черних |
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