Synthesis of 4-hydroxy-5-methyl-2-[2-(4-oxo-4H-chromen-3-yl)ethenyl]-6H-1,3-oxazin-6-ones and their reaction with hydrazine
- Авторы: Chernov N.1, Klyukin A.1, Ksenofontova G.1, Shchegolev A.1, Yakovlev I.1
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Учреждения:
- St. Petersburg State Chemical Pharmaceutical Academy
- Выпуск: Том 87, № 5 (2017)
- Страницы: 952-956
- Раздел: Article
- URL: https://journals.rcsi.science/1070-3632/article/view/219700
- DOI: https://doi.org/10.1134/S1070363217050103
- ID: 219700
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Аннотация
4-Hydroxy-6H-1,3-oxazin-6-ones containing a 3-vinylchromone fragment in the 2-position were synthesized. The direction of their reactions with hydrazine hydrate was found to depend on the solvent nature. The reaction in protic solvents (methanol, acetic acid) resulted in recyclization of both oxazine ring to 1,2,4-triazole and pyranone ring to pyrazole. Aprotic acetonitrile favored attack of hydrazine exclusively on the oxazine ring, while the 3-vinylchromone fragment remained intact.
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N. Chernov
St. Petersburg State Chemical Pharmaceutical Academy
Автор, ответственный за переписку.
Email: nikita.chernov@pharminnotech.com
Россия, ul. Professora Popova 14A, St. Petersburg, 197376
A. Klyukin
St. Petersburg State Chemical Pharmaceutical Academy
Email: nikita.chernov@pharminnotech.com
Россия, ul. Professora Popova 14A, St. Petersburg, 197376
G. Ksenofontova
St. Petersburg State Chemical Pharmaceutical Academy
Email: nikita.chernov@pharminnotech.com
Россия, ul. Professora Popova 14A, St. Petersburg, 197376
A. Shchegolev
St. Petersburg State Chemical Pharmaceutical Academy
Email: nikita.chernov@pharminnotech.com
Россия, ul. Professora Popova 14A, St. Petersburg, 197376
I. Yakovlev
St. Petersburg State Chemical Pharmaceutical Academy
Email: nikita.chernov@pharminnotech.com
Россия, ul. Professora Popova 14A, St. Petersburg, 197376