3-Substituierte 4H-Pyrazolo[5,1-c][1,4]benzoxazine durch intramolekulare Nitriliminaddition
✍ Scribed by Dr. D. Janietz; K. Khoudary; Doz. Dr. W.-D. Rudorf
- Publisher
- John Wiley and Sons
- Year
- 1987
- Tongue
- English
- Weight
- 324 KB
- Volume
- 329
- Category
- Article
- ISSN
- 1615-4150
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📜 SIMILAR VOLUMES
Condensations of 5-(2-hydroxyphenyl)pyrazoline 3a with 4-carboxybenzaldehyde, glyoxylic acid and N,N'-carbonyldiimidazole leading to pyrazolobenzoxazine derivatives were studied. The observed diastereoselectivity is discussed. Reaction of 3a with Lawesson reagent gave rise to a new 5H-pyrazolo[1,5-c
## Abstract 1‐Methoxy‐1,1,4‐triphenyl‐2‐butin‐4‐on bildet mit Desoxybenzoin und 2‐Aminophenol an der Dreifachbindung Additionsprodukte. Diese reagieren unter sauren Bedingungen mit ihrer Methoxy‐diphenylmethyl‐Gruppe zu Derivaten des 2,3‐Dihydrofurans oder 3,4‐Dihydro‐2__H__‐1,4‐benzoxazins.