US Patent Issued to Pfizer on Sept. 9 for "Efficient process for making 6-carboxy benzoxazole derivatives" (Irish Inventors)

ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,410,145, issued on Sept. 9, was assigned to Pfizer Inc. (New York).

"Efficient process for making 6-carboxy benzoxazole derivatives" was invented by Simon Peter Curran (Frankfield, Ireland) and Padraig Mary O'Neill (Crosshaven, Ireland).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention is directed to an efficient process for preparing benzoxazole derivatives comprising the step of reacting a 4-Amino-3-hydroxybenzoic acid compound of Formula III with a 3,5-Dichlorophenyl ortho ester compound of Formula II to provide the compound of Formula Iwherein R1, R2a, R2b and R2c are as described herein."

The patent was filed on Dec. 16, 2020, u...