ChemInform Abstract: New Syntheses of Benzotriazepines by Non-Convenient Cyclization Reaction of N1,N3-Diarylamidrazones.
โ Scribed by P. FROHBERG; P. NUHN
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 30 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0931-7597
No coin nor oath required. For personal study only.
โฆ Synopsis
New Syntheses of Benzotriazepines by Non-Convenient Cyclization Reaction of N1,N3-Diarylamidrazones.
-The reaction of the N3-unsubstituted amidrazone (I) with formaldehyde gives the triazole (III). The corresponding N3-monosubstituted analogues (IV) yield the expected triazolines (V). Surprisingly, the amidrazones (VI) give the benzotriazepines (VII) under the same conditions.
๐ SIMILAR VOLUMES
Regio-and Stereoselective Synthesis of ฮณ-Alkylidenebutenolides by Cyclization of Dilithiated 1,3-Dicarbonyl Compounds with N,N'-Dimethoxy-N,N'-dimethylethanediamide. -A new and convenient method for the selective preparation of functionalized ฮณ-alkylidenebutenolides, intermediates for natural produ
3-Amino-2(1H)-quinolones by Cyclization of N-Acylated Anthranilic Acid Derivatives. -Haloacetylated compounds (I) are treated with various secondary amines giving 2-aminoacetyl compounds (III), which are subjected to the Thorpe-Ziegler cyclization to obtain title compounds (IV). The heterocondensed