Patents by Inventor Nilay Dilipkumar Bhatt

Nilay Dilipkumar Bhatt 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).

  • Process for Preparing Levetiracetam and Racemization of (R)- and (S)-2-Amino Butynamide and the Corresponding Acid Derivatives
    Publication number: 20080194840
    Abstract: Process for the preparation of (S)-(?)-?-ethyl-2-oxo-1-pyrrolidineacetamide of Formula (I), comprising the steps of (i) resolution of racemic 2-amino butynamide with L-(+)-tartaric acid either in alcoholic solvents like methanol, isopropanol, ethanol or in water or mixture of water-alcohol to provide (S)-(+)-2-amino butynamide tartarate salt; and ii) direct conversion of (S)-(+)-2-amino butynamide tartarate salt and 4-halobutryl chloride in presence of inorganic or organic base in suitable solvent and drying agents yielded the desired (S)-(?)-?-ethyl-2-oxo-1-pyrrolidineacetamide (I). Further (S)-(+)-2-amino butynamide tartarate salt is converted to (S)-(+)-2-amino butynamide hydrochloride salt, by reacting with an inorganic or organic base in a suitable solvent followed by reaction with HCl gas in an appropriate solvent.
    Type: Application
    Filed: January 20, 2006
    Publication date: August 14, 2008
    Applicant: Rubamin Laboratories Limited
    Inventors: Arun Kanti Mandal, Satish Wasudeo Mahajan, Pintoo Ganguly, Apurba Chetia, Nitesh Dolatram Chauhan, Nilay Dilipkumar Bhatt, Reenaben Ratansing Baria