Pyrrole as a dienophile in intramolecular inverse electron-demand Diels-Alder reactions with 1,2,4-triazines
β Scribed by Li, Jia He; Snyder, John K.
- Book ID
- 111682102
- Publisher
- American Chemical Society
- Year
- 1993
- Tongue
- English
- Weight
- 625 KB
- Volume
- 58
- Category
- Article
- ISSN
- 0022-3263
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π SIMILAR VOLUMES
Imidazole and 2-phenylimidazoleundergo intramolecularcycloadditions with 1,2,4triazines tethered betweenan imidazolenitrogenand the triazinylC3 position with a trimethylene chainto producetetrahydro-l,5-naphthyridines followingloss of N2 and a nitrile.
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Intermolecular cycloadditions between trialkyl 1,2,4-triazine-4,5,6-tricarboxyIatesand protected2-aminoimidazolegave IH-imidazo[4,5-c]pyridines (3-deazapurines)andthe rearranged3Hpyrido[3,2-d]pyrimid-4-ones (8-deazapteridines). No cycloadditions wereobservedwithimidazoleand2phenylimidazole.Q 1997Els