The application of unsymmetrical vinylogous iminium salts and related synthons to the preparation of monosubstituted triazolo[1,5-a]pyrimidines

Article abstract of DOI:10.1016/S0040-4020(01)89564-8

The reaction of vinylogous iminium salts and related analogs with 3-amino-1,2,4-triazole to yield 7-substituted and 5-substituted triazolo[1,5-a]pyrimidines is described.