US 11,999,687 B2
Methods for the production of L-threonic acid salts from L-xylonic acid
Jonathan Stapley, Mercer Island, WA (US); and David Genders, Lancaster, NY (US)
Assigned to DFI USA, LLC, Greenacres, WA (US)
Appl. No. 18/042,950
Filed by DFI USA, LLC, Greenacres, WA (US)
PCT Filed Aug. 27, 2021, PCT No. PCT/US2021/048057
§ 371(c)(1), (2) Date Feb. 24, 2023,
PCT Pub. No. WO2022/047231, PCT Pub. Date Mar. 3, 2022.
Claims priority of provisional application 62/706,632, filed on Aug. 28, 2020.
Prior Publication US 2023/0227395 A1, Jul. 20, 2023
Int. Cl. C07C 51/235 (2006.01); C07C 45/51 (2006.01); C07C 51/47 (2006.01); C25B 3/07 (2021.01)
CPC C07C 51/235 (2013.01) [C07C 45/512 (2013.01); C07C 51/47 (2013.01); C25B 3/07 (2021.01)] 11 Claims
 
1. A method of producing L-threonic acid from L-xylonic acid comprising: decarboxylatinq 2-keto-L-gulonic acid (KLG) to L-xylonic acid, decarboxylating the L-xylonic acid to L-threose, and oxidizing the L-threose to L-threonic acid,
wherein the decarboxylatinq 2-keto-L-gulonic acid (KLG) to L-xylonic acid and the decarboxylatinq L-xylonic acid to L-threose is performed concurrently in an electrochemical cell.