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The title compound, C12H13N5O2S, exists in the 3-phenyl-5-thioureido-1H-1,2,4-triazole tautomeric form stabilized by intramolecular hydrogen bonding between the endocyclic NH H atom and the thioureido S atom. The molecular structure is also stabilized by intramolecular N-H...O=C hydrogen bonds arranged in an S(6) graph-set motif within the carbethoxythiourea moiety. The mean planes of the phenyl and 1,2,4-triazole rings make a dihedral angle of 7.61 (11)deg. In the crystal, the molecules form two types of inversion dimers. Intermolecular hydrogen bonds are arranged in R22(6) and R22(8) graph-set motifs, together forming a network parallel to (111).
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Dolzhenko, Anton; Tan, G.; Koh, L.; Dolzhenko, A.; Chui, W. (2009)In the title compound, C8H8N4-C8H8N4, two tautomers, viz. 3-phenyl-1,2,4-triazol-5-amine and 5-phenyl-1,2,4-triazol-3-amine, are crystallized together in equal amounts. The 3-phenyl-1,2,4-triazol-5-amine molecule is ...
Lim, F.; Tan, L.; Tiekink, E.; Dolzhenko, Anton (2018)Two complementary pathways for the preparation of N-substituted 3-(5-amino-1H-1,2,4-triazol-3-yl)propanamides (5) were proposed and successfully realized in the synthesis of 20 representative examples. These methods use ...
Synthesis of 5,7-Diamino[1,2,4]triazolo[1,2-a][1,3,5]triazines via Annulation of 1,3,5-Triazine Ring onto 3(5)-Amino-1,2,4-trizolesDolzhenko, Anton; Dolzhenko, A.; Chui, W. (2007)The 5,7-diamino[1,2,4]triazolo[1,5-a][1,3,5]triazines were synthesized by cyclocondensation of 3(5)-amino-1,2,4-triazoles with cyanoguanidine. The substituted 3(5)-amino-1,2,4-triazoles were prepared from corresponding ...