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Synthese des 5, 7-Dimethyl-1, 2, 4-triazolo[1, 5-a]-pyrimidin-2-carbaldehyds

✍ Scribed by Eberhard Lippmann; Volkmar Becker


Publisher
Wiley (John Wiley & Sons)
Year
2010
Weight
243 KB
Volume
14
Category
Article
ISSN
0044-2402

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πŸ“œ SIMILAR VOLUMES


Synthese und Reaktionen des 7-Methyl-1,2
✍ Eberhard Lippmann; Volkmar Becker πŸ“‚ Article πŸ“… 2010 πŸ› Wiley (John Wiley & Sons) βš– 215 KB

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.

Zur Synthese von 1, 2, 4-Triazolo[1, 5-a
✍ Eberhard Lippmann; Volkmar Becker πŸ“‚ Article πŸ“… 2010 πŸ› Wiley (John Wiley & Sons) βš– 228 KB

## N , N'-Bis-[a-( 3 4 -butylthioureido) -4-nitrobenzylidenJuthylendiamin Aus 0,01 mol 2a und 0,02 mol n-Butylamin; gelbliche Nadeln aus Athanol, Schmp. 155 "C (Zers.), Ausbeute 97% d.Th.

Addition of hydrazine to 4,7-dihydro[1,2
✍ Sergey A. Komykhov; Konstantin S. Ostras; Kyryl M. Kobzar; Vladimir I. Musatov; πŸ“‚ Article πŸ“… 2009 πŸ› Journal of Heterocyclic Chemistry 🌐 English βš– 63 KB

## 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

5,5-Dimethyl-2-phenyl-4,5-dihydro-1,2,4-
✍ Dolzhenko, Anton V. ;Tan, Geok Kheng ;Koh, Lip Lin ;Dolzhenko, Anna V. ;Chui, Wa πŸ“‚ Article πŸ“… 2007 πŸ› International Union of Crystallography 🌐 English βš– 945 KB

The title compound, C 12 H 14 N 6 , was synthesized via cyclocondensation of 5-amino-1-guanyl-3-phenyl-1,2,4-triazole with acetone. Only one tautomeric form with an H atom at the triazine N atom was observed in the crystal structure. The compound crystallizes with two almost identical molecules in t