Method for the Preparation of Deuterated or Tritiated Compounds

Simple SummaryContent extracted from patent full text and abstract with AI.

This invention provides a method for preparing deuterated or tritiated aromatic compounds by exchanging hydrogen atoms on the aromatic ring with deuterium or tritium atoms. The process involves dissolving or dispersing an aromatic starting compound in a non-aqueous deuterated or tritiated solvent, adding an acid, and enabling the isotopic exchange without the need for harsh conditions or toxic transition metal catalysts. The technique is efficient, works under mild conditions, and can be applied to a wide range of aromatic and heteroaromatic compounds, even those with sensitive functional groups.

Use CasesContent extracted from patent full text and abstract with AI.

• Synthesis of deuterated pharmaceuticals with enhanced metabolic stability and modified pharmacokinetic properties.
• Preparation of isotopically-labeled standards for mass spectrometry and analytical chemistry, improving accuracy in quantitative analyses.
• Production of deuterium- or tritium-labeled compounds for studying drug metabolism and tracing metabolic pathways in biological research.
• Generation of labeled intermediates and reference substances needed in chemical synthesis or regulatory tests.
• Development of agricultural chemicals with improved characteristics or for research into degradation and environmental fate.
• Labeling of complex natural products or biomolecules for structure elucidation, NMR studies, and mechanistic investigations.

BenefitsContent extracted from patent full text and abstract with AI.

• Enables deuteration or tritiation of aromatic compounds without toxic or expensive transition metal catalysts.
• Operates under mild conditions (low temperature, moderate acid concentration), making it suitable for sensitive or complex molecules.
• Broad substrate compatibility, including carbocyclic and heterocyclic aromatics, and tolerance for various substituents and functional groups.
• Facilitates high isotopic incorporation (typically >90%) and high yield in short reaction times.
• Improves safety, reduces costs, and lowers environmental impact compared to conventional harsh or metal-catalyzed methods.
• Scalable for both small-scale research and larger-scale production needs.

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

Provided is a method for the preparation of a deuterated or tritiated aromatic compound via deuteration or tritiation of an aromatic starting compound which comprises an aromatic ring or a fused aromatic ring system which may be carbocyclic or hetercyclic and which carries at least one hydrogen atom directly bonded to a carbon ring atom of an aromatic ring, said method comprising:a) providing a liquid composition wherein the aromatic starting compound is dissolved or dispersed in a deuterated or tritiated solvent which is not water, or in a solvent system comprising at least one deuterated or tritiated solvent which is not water; andb) replacing at least one hydrogen atom directly bonded to a carbon ring atom of an aromatic ring comprised by the aromatic starting compound with deuterium or tritium via the transfer of at least one deuterium of tritium atom from the deuterated or tritiated solvent to the aromatic starting compound dissolved or dispersed in the liquid composition in the presence of an acid,to convert the aromatic starting compound to a deuterated or tritiated aromatic compound which comprises an aromatic ring or a fused aromatic ring system which may be carbocyclic or hetercyclic and which carries at least one deuterium or tritium atom directly bonded to a carbon ring atom of an aromatic ring.