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Updated: Jun 1, 2026
![Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F60786.jpg&w=3840&q=50)
Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions
Published on: July 17, 2020
3-Ethyl-6-[3-(4-fluoro-phen-yl)-1H-pyrazol-4-yl]-1,2,4-triazolo[3,4-b][1,3,4]thia-diazole
Abstract:
In the title compound, C(14)H(11)FN(6)S, the 1,2,4-triazolo[3,4-b][1,3,4]thia-diazole ring system is essentially planar [maximum deviation = 0.022 (3) Å] and is inclined at dihedral angles of 15.00 (18) and 52.82 (16)° with respect to the pyrazole and phenyl rings. In the crystal, mol-ecules are linked into two-dimensional networks parallel to (100) via inter-molecular N-H⋯N and weak C-H⋯N hydrogen bonds. The crystal packing is further consolidated by weak π-π stacking inter-actions, with a centroid-centroid distance of 3.590 (2) Å. The crystal studied was an inversion twin with a 0.37 (13):0.63 (13) domain ratio.
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