The interaction of 2-amino-1,3,4-oxadiazole-5-carboxamidoxime with nit
riles in the presence of ZnCl2 and HC1 or with trichloroacetic anhydri
de affords mino-5-(5R-1,2,4-oxadiazolyl-3)-1,3,4-oxadiazoles. Their re
actions with N-nucleophiles have been studied.