A New Entry to [1,2,4]Triazolo [1,5-a][1,4]benzodiazepin-6-ones via Intramolecular Nitrilimine Cycloaddition to the Cyano Group. -A new methodology is presented for the synthesis of title benzodiazepinones (VIII), which are of potential pharmacological interest. Thus, employing nitrilimines, genera
A new entry to [1,2,4]triazolo[1,5-a][1,4]benzodiazepin-6-onesvia intramolecular nitrilimine cycloaddition to the cyano group
β Scribed by Gianluigi Broggini; Luisa Garanti; Giorgio Molteni; Gaetano Zecchi
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- French
- Weight
- 502 KB
- Volume
- 54
- Category
- Article
- ISSN
- 0040-4020
No coin nor oath required. For personal study only.
β¦ Synopsis
A series of [l,2.4]triazolo [l,5-al[l,4]benzodiazepin-6-ones of potential pharmacological interest have been synthesised by means of intramolecular nitrilimine cycloadditions to the cyano group.
π SIMILAR VOLUMES
A synthetic route to the title ring system is described, which starts from isatoic anhydride and allylamines, and involves as the key step an intramolecular nitrile imine cycloaddition. The simultaneous formation of two new rings, often accompanied by a high degree of regio-and stereo-selectivity, m
## Abstract magnified image The 7βarylβ4,7βdihydro[1,2,4]triazolo[1,5β__a__]pyrimidines **1a**, **1b**, **1c** can undergo addition of hydrazine to the enamine double bond leading to hydrazine derivatives of tetrahydrotriazolopyrimidines **2a**, **2b**, **2c**; the process is usually accompanied by