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Last updated January 31, 2026
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Enantioselective mesoionic pyrimidinium synthesis: BASFRecent Research Landscape

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.

What technical problems is BASF addressing in Enantioselective mesoionic pyrimidinium synthesis?

Low precursor synthetic yield

(15)evidences

Inefficient conversion rates and poor selectivity in multi-step organic synthesis. Improving yield reduces waste and lowers production costs for specialized chemical intermediates.

Low enantiomeric purity

(12)evidences

Inefficient production of single-isomer bioactive molecules leads to reduced biological efficacy and unwanted side effects. Achieving high optical enrichment ensures maximum potency and regulatory compliance for agrochemical and pharmaceutical applications.

Inefficient aromatic carboxamide synthesis

(8)evidences

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.

Low regioselectivity in heterocycle functionalization

(6)evidences

Uncontrolled substitution patterns and poor structural specificity during ring formation. Achieving high isomeric purity reduces costly downstream separation and purification steps.