Some reactions of 1,3-Dichloro-2-azoniaallene Salts with heteronucleophiles
โ Scribed by A. Hamed; M. Sedeak; A.-H. Ismail; R. Stumpf; H. Fischer; Prof. Dr. J. C. Jochims
- Book ID
- 105354561
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 791 KB
- Volume
- 337
- Category
- Article
- ISSN
- 1615-4150
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
Only a few reports deal with Diels-Alder or 1,3-dipolar cycloaddition reactions of glycals . For instance, azodicarboxylates undergo Diels-Alder cycloaddition with glycals to afford oxadiazines [2 -9]. The method allows the stereoselective introduction of a nitrogen atom on C-2 of a carbohydrate, an
1,3-Disubstituted triazenes 3 are oxidized with ten-butyl hypochlorite to N-chlorotriazenes 4, which at low temperatures with antimony pentachloride afford 1,3-diaza-2-azoniaallene salts 5 as reactive intermediates. Cations 5 undergo cycloadditions to one or both double bonds of 1,3-butadienes to fu