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Synthesis of polyfunctionally substituted benzo[5,6]chromeno[4,3,2-de][1,6]naphthyridines and 5H-benzo[5,6]chromeno[3,4-c]pyridines
| Content Provider | Semantic Scholar |
|---|---|
| Author | Shaker, Raafat M. |
| Copyright Year | 2006 |
| Abstract | Cyclocondensation of 2-(3-amino-2-cyano-1H-benzo(f)chromen-1-yl)-malononitrile (1) with β- dicarbonyles 2a-d, benzoylacetonitrile 2e, malononitrile 2f, and 3-aminocrotononitrile (9) gave the benzo(5,6)chromeno(4,3,2-de)(1,6)naphthyridines (4a-e, 6 and 11). Refluxing 1 with ammonium acetate in ethanol gave pyridine-3,5-dicarbonitrile 12 that converted in the presence of HCl into 5H-benzo(5,6)chromeno-(3,4-c)pyridine 14. The structures of the products were proved by elemental analyses, IR, MS, 1 H and 13 C NMR spectroscopy. |
| File Format | PDF HTM / HTML |
| DOI | 10.3998/ark.5550190.0007.e09 |
| Volume Number | 2006 |
| Alternate Webpage(s) | https://www.arkat-usa.org/get-file/22747/ |
| Alternate Webpage(s) | https://doi.org/10.3998/ark.5550190.0007.e09 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |