On the totally tangent lines to a generic hypersurface of degree 4n−4 in ℙn
✍ Scribed by Luciana Picco Botta; Daniela Romagnoli
- Publisher
- Springer
- Year
- 1992
- Tongue
- English
- Weight
- 410 KB
- Volume
- 59
- Category
- Article
- ISSN
- 0003-889X
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📜 SIMILAR VOLUMES
Reaction of N-aryl substituted maleimides with aliphatic ketazines leads to the formation of 4,5-dihydropyridazin-3(2H)-ones in moderate yields. The reaction proceeds through 1,4-addition of an azine to the maleimide double bond, as confirmed by separation of the corresponding adducts in some cases,
## Abstract Reaction of 1,5‐benzodiazepin‐2,4‐dione with 3‐__O__‐substituted‐5,6‐anhydro‐1,2‐isopropylidene‐α‐D‐glucofuranose gave the unexpected __N,N'__‐di‐glucofuranosyl benzimidazol‐2‐one by a novel rearrangement and ring closure reaction. A mechanism is proposed.