This review primarily focuses on the publications within the last 25 years (i.e. from 1990 to 2014) related to the advances in the synthesis and reactions of annulated 3-amino-4-iminopyrimidines. The literature results covered in this review demonstrate that the studied reactions are chemo-selective.
Keywords: Dimroth rearrangement, fused triazoles, tetrazoles, triazines and triazepines, Heterocycles.