## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v
Reactions with heterocyclic β-enaminoesters: A novel synthesis of 2-amino-3-ethoxycarbonyl-(4H)-pyrans
✍ Scribed by Mohamed Rifaat Hamza Elmoghayer; Mohamed Ali Elsayed Khalifa; Mohamed Kamal Ahmed Ibraheim; Mohamed Hilmy Elnagdi
- Publisher
- Springer Vienna
- Year
- 1982
- Tongue
- English
- Weight
- 201 KB
- Volume
- 113
- Category
- Article
- ISSN
- 0026-9247
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📜 SIMILAR VOLUMES
Only few methods for 4H-pyran synthesis are known. In them, carbonyl compounds (Z-4). pyrylium salts (5-7) or y-pyrones (8.9) a're used as starting materials.
Cycloaddition Reactions of (Z)-β-Siloxyacrylonitriles with Enones: Synthesis of 4H-Pyrans and Dihydro-2H-pyrans. -The great potential of (Z)-β-siloxyacrylonitriles as versatile synthons is proved by preparation of pyran types (III) and (V). The method is especially useful for (III) for which not man
## Abstract Alkyl (Z)‐2‐[(__E__)‐2‐ethoxycarbonyl‐2‐(2‐pyridinyl)ethenyl]amino‐3‐dimethylaminopropenoates **7** and **8** were prepared from ethyl 2‐pyridinylacetate (1) in two steps. Substitution of the dimethylamino group with alkyl‐, aryl‐, or heteroarylamines afforded the corresponding β‐alkyl‐