Synthesis of indazolo[5,4-b][1,6]naphthyridine and indazolo[6,7-b][1,6]naphthyridine derivatives
A simple method for the synthesis of the title compounds by an efficient in-situ reduction and cyclization reactions of aromatic aldehydes, tert-butyl 2,4-dioxopiperidine-1-carboxylate and 5-nitro-1H-indazole or 6-nitro-1H-indazole was developed.
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2019-04-01
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| Series: | Heterocyclic Communications |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/hc-2019-0006 |