ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,559,460, issued on Feb. 24, was assigned to AGC Inc. (Tokyo).
"Method for producing aromatic heterocyclic ring-substituted difluoroacetic acid derivative" was invented by Yoshitaka Nomura (Tokyo) and Eiichiro Anraku (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing an aromatic heterocycle-substituted difluoroacetic acid derivative having a partial structure represented by the formula (III), by reacting an N-oxido aromatic heterocyclic compound having a partial structure represented by the formula (I) with tetrafluoroethylene in the presence of a compound represented by the formula (II): R-YH, in a solvent selected from an arom...