for the following products
2-(4-Biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole, Reag. | 2-(4-tert-Butylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole | 2-[1,1'-Biphenyl]-4-yl-5-[4-(1,1-dimethylethyl)phenyl]-1,3,4-oxadiazole | Butyl PBD and 2-(4-Biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole
