A series of 5-substituted-4-amino-1,2,4-triazole-3-thioesters was synthesized by converting variously substituted organic acids successively into the corresponding esters, hydrazides, 5-substituted-1,3,4-oxadiazole-2-thiols, 5-substituted-1,2,4-triazole-2-thiols and 5-substituted-1,3,4-oxadiazole-2-thioesters. Finally the target compounds were obtained by refluxing 5-substituted-1,3,4-oxadiazol...

1,3,4-Oxadizoles form a biologically important group of compounds having activities like analgesic, anti-inflammatory, bactericidal, antifungal, anticonvulsant, psychotropic, plant growth regulating and mono amino oxidase inhibition. This research has focused on the incorporation of the oxadiazole moiety into isoniazid because of their versatile biological action, to get 2-aryl-5-(4-pyridyl)-1,...

Synthesis of 1,3,4-oxadiazole derivatives of diclofenac and mefenamic acid are described. The target compounds 5-[2-(2,6-dichloroanilino)benzyl]-2-aryl-1,3,4-oxadiazole (3a-3e) and 5-[2-(2,3-dimethylanilino)phenyl]-2-(aryl)-1,3,4-oxadiazole (6a-6e) were obtained by treating 2 and 5 with various aromatic acids using POCl(3) as dehydrating agent. They were purified and characterized by IR, (1)H-N...

The compound, C(32)H(28)N(4)O(5), which was synthesized by the reaction of 2,5-bis-(2-hydroxy-lphen-yl)-1,3,4-oxadiazole with N-benzyl-2-chloro-acetamide, lies on a twofold rotation axis which passes through the mid-point of the N-N bond and the O atom of the oxadiazole unit. The phenyl-ene and oxadiazole rings are almost coplanar [dihedral angle 1.67 (5)°]. The structure is stabilized by intra...

In this study, sulfone derivatives containing 1,3,4-oxadiazole moieties indicated good antibacterial activities against rice bacterial leaf blight caused by the pathogen Xanthomonas oryzaepv. pv. oryzae (Xoo). In particular, 2-(methylsulfonyl)-5-(4-fluorobenzyl)-1,3,4-oxadiazole revealed the best antibacterial activity against Xoo, with a half-maximal effective concentration (EC50) of 9.89 μg/m...

A class of innovative benzimidazole-1,3,4-Oxadiazole derivatives is a significant heterocyclic molecule for therapeutic development. In chemistry, the novel 1,3,4-Oxadiazole nucleus has wide range uses, including antibacterial, treatment. Molecular docking frequently employed in contemporary drug design to comprehend drug-receptor interaction. Swiss dock, PyRx, and discovery studio visualizer (...

In the title compound, C(19)H(20)N(2)O(2), the 1,3,4-oxadiazole ring is almost coplanar with the two neighboring benzene rings [dihedral angles = 3.76 (4) and 5.49 (4)°]. In the crystal, mol-ecules are connected by strong inter-molecular O-H⋯N hydrogen bonds, forming chains parallel to the c axis.

In the mol-ecule of the title compound, C(20)H(19)N(5)O, the pyrazole and oxadiazole rings are not completely conjugated, the dihedral angle between them being 7.97 (6)°. The pyrazole and oxadiazole rings form dihedral angles of 42.74 (6) and 4.35 (5)° with the attached phenyl and benzene rings, respectively.

The addition of various nucleophiles to a vinyl 1,2,4-oxadiazole is described. Following optimisation, individual protocols tuned for the use of each specific class of reagent have been developed to allow the installation of nitrogen, sulfur, oxygen, and carbon nucleophiles, and leading to the preparation of a series of compounds containing the pharmaceutically important oxadiazole motif.

N, N΄-3, 4-di(methylamino)-1, 2, 5-oxadiazole (1f) was prepared by dehydration of N, N΄-3, 4-di(methylamino)glyoxime (2f) in aqueous potassium hydroxid at 170-180 ˚C. Under similar conditions N, N΄-3, 4-di(benzylamino)-1, 2, 5-oxadiazole (1c) and N, N΄-3, 4-di(isopropylamino)...