Patents Assigned to E. I. uPont de Nemours and Company
  • Process for converting ?-angelica lactone to 5-methyl-N-alkyl-2-pyrrolidone using alkyl amines
    Patent number: 7030249
    Abstract: This invention relates to a process for producing 5-methyl-N-alkyl-2-pyrrolidone by a) reacting ?-angelica lactone with alkyl amines and b) hydrogenating the products of step (a) in the presence of a metal catalyst, which is optionally supported.
    Type: Grant
    Filed: September 8, 2004
    Date of Patent: April 18, 2006
    Assignee: E. I. uPont de Nemours and Company
    Inventor: Leo Ernest Manzer