Low chiral purity in mesoionic pesticide precursors leads to reduced bioactivity and higher regulatory burden. These methods employ asymmetric synthesis to ensure high enantiomeric enrichment of the dihydrothiazolopyrimidinium scaffold.
Standard carbonylation and amidation methods often fail or degrade in the presence of highly electronegative polyfluorinated groups or sensitive hydroxycarbamimidoyl moieties. Overcoming these chemical incompatibilities allows for the synthesis of complex bioactive scaffolds that were previously inaccessible.