Ring Transformation Reaction in 4-Nitroimidazoles Following an Attack of Nucleophiles

It was proved that 4-nitroimidazoles substituted at the nitrogen atom 1 with electron acceptor groups (aryl, arenesulfonyl, nitro) in reactions with some nucleophiles yield the products of ordinary or degenerated imidazole ring transformation (oxadiazoles, triazoles, imidazoles)