US 12,240,808 B2
Process for the synthesis of calebin-a and its intermediates
Muhammed Majeed, Bangalore (IN); Kalyanam Nagabhushanam, East Windsor, NJ (US); Nagarajan Muthukaman, Bangalore (IN); and Pentakota Paradesi Naidu, Bangalore (IN)
Filed by Muhammed Majeed, Bangalore (IN); Kalyanam Nagabhushanam, East Windsor, NJ (US); Nagarajan Muthukaman, Bangalore (IN); and Pentakota Paradesi Naidu, Bangalore (IN)
Filed on May 26, 2022, as Appl. No. 17/825,689.
Claims priority of provisional application 63/194,465, filed on May 28, 2021.
Prior Publication US 2022/0388939 A1, Dec. 8, 2022
Int. Cl. C07C 67/08 (2006.01); C07C 67/11 (2006.01); C07C 67/293 (2006.01); C07C 69/734 (2006.01); C07C 69/736 (2006.01)
CPC C07C 67/08 (2013.01) [C07C 67/11 (2013.01); C07C 67/293 (2013.01); C07C 69/734 (2013.01); C07C 69/736 (2013.01); C07C 2601/16 (2017.05)] 6 Claims
 
1. A compound of general formula 3 represented below

OG Complex Work Unit Chemistry
wherein X is selected from the group consisting of Cl, Br, and I; and
R is selected from the group consisting of OMe, and H.