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A convenient method for the synthesis of 7-amino-substituted 1,2,4-triazolo[1,5-a][1,3,5]triazin-5-amines

โœ Scribed by Anton V. Dolzhenko; Giorgia Pastorin; Anna V. Dolzhenko; Wai Keung Chui


Publisher
Elsevier Science
Year
2008
Tongue
French
Weight
194 KB
Volume
49
Category
Article
ISSN
0040-4039

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5,5-Dimethyl-2-phenyl-4,5-dihydro-1,2,4-
โœ Dolzhenko, Anton V. ;Tan, Geok Kheng ;Koh, Lip Lin ;Dolzhenko, Anna V. ;Chui, Wa ๐Ÿ“‚ Article ๐Ÿ“… 2007 ๐Ÿ› International Union of Crystallography ๐ŸŒ English โš– 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

7,7-Dimethyl-2-phenyl-6,7-dihydro-1,2,4-
โœ Dolzhenko, Anton V. ;Tan, Geok Kheng ;Koh, Lip Lin ;Dolzhenko, Anna V. ;Chui, Wa ๐Ÿ“‚ Article ๐Ÿ“… 2007 ๐Ÿ› International Union of Crystallography ๐ŸŒ English โš– 494 KB

The title compound, C 12 H 14 N 6 , was synthesized via cyclocondensation of 5-guanidino-3-phenyl-1,2,4-triazole with acetone. Only one tautomeric form with the NH H atom vicinal to the methyl groups was observed in the crystal structure. The triazine ring adopts a flattened half-boat conformation.

On triazoles XLV [1]. synthesis of 5,7-d
โœ Gรกbor Berecz; Lรกszlรณ Pongรณ; Istvรกn Kรถvesdi; Jรณzsef Reiter ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› Journal of Heterocyclic Chemistry ๐ŸŒ English โš– 84 KB

## Abstract **Dedicated to Professor Andrรกs Messmer on the occasion of his 80^th^ birthday** The reaction of differently substituted 5โ€aminoโ€1,2,4โ€triazoles (**5**) with isothiourea derivatives (**3**) to yield isomeric 5,7โ€diaminoโ€1,2,4โ€triazolo[1,5โ€__a__][1,3,5]triazines (**6** and **7**), previ