The study of SRN1 reaction between 2-chloromethyl-3-nitroimidazo [1, 2-a] pyridine and 2- nitropropane salts has been extended to various aliphatic, cyclic and heterocyclic nitronate anions. From C-alkylation products, base-promoted nitrous acid elimination afforded new potential pharmacological derivatives with a trisubstituted double bond at the 2 position.