Catalyst-free formal [3+2] cycloaddition of stabilized N,N-cyclic azomethine imines to 3-nitrobenzofurans and 3-nitro-4H-chromenes: access to heteroannulated pyrazolo[1,2-a]pyrazoles
We have studied the [3 + 2]-cycloaddition of various N,N-cyclic azomethine imines to 3-nitrobenzofurans. This process is a rare example of their dearomatization. We have also extended this process to the related 3-nitro-4H-chromenes as dipolarophiles. Both reactions provide access to benzofuro- and...
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| Format: | Статья |
| Sprache: | English |
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ROYAL SOC CHEMISTRY
2021
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| Online Zugang: | https://dspace.ncfu.ru/handle/20.500.12258/18445 |
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