On the reaction between potassium ethoxide and 3-amino-4-benzoylfurazan: the crystal structure of the intermediate, 5-phenyl-1,2,4-oxadiazole-3-carboxamide

Abstract

The crystal and molecular structure of 5-phenyl-1,2,4-oxadiazole-3-carboxamide, C₉H₇N₃O₂, has been determined by single-crystal X-ray analysis. The crystals are triclinic, space group P, a= 10.290(2), b= 8.170(2), c= 5.423(1)Å, α= 98.51(1), β= 99.63(1), γ= 95.87(1)°, Z= 2. The structure was solved from diffractometer data by direct methods and refined by full matrix least-squares to R 7.7% for 1 446 reflexions. 5-Phenyl-1,2,4-oxadiazole-3-carboxamide is an intermediate in the reaction between 3-amino-4-benzoylfurazan and potassium ethoxide and its analysis established the structural formula of the final product of the reaction as the corresponding 5-phenyl-1,2,4-oxadiazole-3-carboxylic acid.