Patents by Inventor Kishor Vilas Khopade

Kishor Vilas Khopade has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • HIGHLY EFFICIENT PROCESS FOR THE PREPARATION OF SITAGLIPTIN VIA RHODIUM CATALYZED ASYMMETRIC HYDROGENATION
    Publication number: 20220048917
    Abstract: The present invention provides highly efficient process for the preparation of enantiomerically enriched Sitagliptin of Formula (Ia). More particularly, a direct rhodium catalyzed asymmetric hydrogenation in the presence of bis-phosphine chiral ligand has been developed to yield enantiopure Sitagliptin product with the highest enantiomeric excess of 85-99.9%.
    Type: Application
    Filed: December 9, 2019
    Publication date: February 17, 2022
    Inventors: Samir Hujur Chikkali, Kishor Vilas Khopade