Oxidative [3+2]Cycloaddition of Alkynylphosphonates with Heterocyclic <i>N</i>-Imines: Synthesis of Pyrazolo[1,5-<i>a</i>]Pyridine-3-phosphonates
A series of pyrazolo[1,5-<i>a</i>]pyridine-3-ylphosphonates were prepared with moderate to good yields by the oxidative [3+2]cycloaddition of 2-subtituted ethynylphosphonates with in situ generated pyridinium-N-imines and their annulated analogs. 2-Aliphatic and 2-Ph acetylenes demonstra...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-11-01
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| Series: | Molecules |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1420-3049/27/22/7913 |