One-step synthesis of 4-methyl-2-substituted quinazoline-3-oxides via polyphosphoric acid catalyzed acylation of electron-rich anilides with nitroethane
A diverse set of 4-methyl-2-substituted quinazoline-3-oxides has been prepared using polyphosphoric acid both as a reaction medium and a Brønsted-acid catalyst. The reaction proceeds in a domino fashion via the formation of a corresponding oxime followed by exo-trig cyclization and elimination of a...
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| Автори: | , , , , , , , , , |
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| Формат: | Статья |
| Мова: | English |
| Опубліковано: |
2024
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| Предмети: | |
| Онлайн доступ: | https://dspace.ncfu.ru/handle/20.500.12258/26766 |
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| Резюме: | A diverse set of 4-methyl-2-substituted quinazoline-3-oxides has been prepared using polyphosphoric acid both as a reaction medium and a Brønsted-acid catalyst. The reaction proceeds in a domino fashion via the formation of a corresponding oxime followed by exo-trig cyclization and elimination of a water molecule which leads, ultimately, to the target N-oxide heterocycles. |
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