Neue Variante zur Synthese von 1H-Pyrazolo[3,4-b]pyridinen
✍ Scribed by Jochen Häufel; Doz. Dr. Eberhard Breitmaier
- Publisher
- John Wiley and Sons
- Year
- 1973
- Tongue
- English
- Weight
- 219 KB
- Volume
- 85
- Category
- Article
- ISSN
- 0044-8249
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
m. p.=248-250GC (dec.; from methanol); [.ID= -129.' (DMSO, c = 1.00); 'H-NMR (D6-DMSO); t=4.13 and 4.18 (s, I-H+l'-H and s, 2 2-benzyl-H, or vice versa); MS: 520 (M+)]. The amino ketone ( 8 ) is probably first formed, being later aromatized by dimerization and air oxidation to yield ( 9 ) . The firs
## Abstract Synthesewege für die unsubstituierte Titelverbindung und 4‐substituierte Derivate werden erneut untersucht.
**Condensed Furans, XLVII. Synthesis of 1__H__‐Pyrano[3,4‐__b__]benzofuran‐1‐one and their Derivatives** The synthesis of 1__H__‐pyrano[3,4‐__b__]benzofuran‐1‐one derivatives (**6**–**14**) and their 2‐aza‐analogues (**15**–**16**) is described.