Methanetricarboxylates as key reagents for the simple preparation of heteroarylcarboxamides with potential biological activity. Part 2 [1]. Reaction of methanetricarboxylates with 2-aminopyridine, 2-aminopyrimidine, 2-aminothiazole and 2-aminobenzothiazole

Article abstract of DOI:10.1002/jhet.5570360136

The reaction of methanetricarboxylates 1a,b with 2-aminopyridine, 2- aminopyrimidine, 2-aminothiazole as well as 2-aminobenzothiazole yields corresponding heteroarylcarboxylic acid esters 2a,b, 5, 8, 11a,b. These heterocyclic esters were used as a starting material by the reaction with primary amines to obtaining a number of heteroarylcarboxylic amides 4a-j, 6, 10a,b, 13a-g bearing various substituents on the carboxamide group.