Eine neue Synthese für 5,6,7-substituierte 1,2,4-Triazolo[1,5-a]pyrimidine
✍ Scribed by Dipl.-Chem. Anke Gerlach; Dr. Dieter Sicker; Doz. Dr. Eberhard Lippmann
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 143 KB
- Volume
- 333
- Category
- Article
- ISSN
- 1615-4150
No coin nor oath required. For personal study only.
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## Abstract magnified image The 7‐aryl‐4,7‐dihydro[1,2,4]triazolo[1,5‐__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
Oxydationsreagens. Wir erhielten so den 7-Methyl-l,2,4-triazolo[l, 5-aIpyrimidin-6-carbaldehyd ( 2 ) und die dazu analoge Saure 3. 2 zeigt im IR-Spektrum eine Carbonylfre-') Schmelzpunkte sind korrigierte Werte und wiwden mit einem Mikroheiztiseh Boetius bestimmt.
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