2,5-Bis(3,7-dichloroquinolin-8-yl)-1,3,4-oxadiazole

The title compound, (I), is a diaryl-substituted 1,3,4-oxadiazole, an example of which is the previously determined crystal structure of 2,5-diphenyl-1,3,4-triazole (Kuznetsov et al., 1998; Franco et al., 2003). The synthesis of 1,3,4-oxadiazoles is readily achieved by the treatment of aromatic carboxylic acids with hydrazine dihydrochloride in a mixture of orthophosphoric acid, phosphorus pentoxide and phosphorus oxychloride (Bentiss & Lagrenee, 1999). Unlike the phenyl derivatives, only a few quinolinyl analogs have been reported (Dabhi et al., 1992; Narayana et al., 2005; Zhang et al., 1989).