Synthesis of 5-(het)aryl- and 4,5-di(het)aryl-2-(thio)morpholinopyrimidines from 2-chloropyrimidine via SN H and cross-coupling reactions

It has been shown that various combinations of nucleophilic aromatic substitution of hydrogen (SN H), SN ipso and the microwave-assisted Suzuki cross-coupling reactions are a versatile method for the synthesis of 5-(het)aryl-2-(thio)morpholinopyrimidine and 4,5-di(het)aryl-2-(thio)morpholinopyrimidine derivatives. All synthesized pyrimidines were found to be active in micromolar concentrations in vitro against Mycobacterium tuberculosis H37Rv.