Patents by Inventor Stefan Beeck

Stefan Beeck 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 sodium salts or potassium salts of 4-hydroxy-2-oxo-2,5-dihydrofuran-3-carboxylate
    Patent number: 9056848
    Abstract: Process for preparing sodium or potassium salts of 4-hydroxy-2-oxo-2,5-dihydrofuran-3-carboxylic esters, comprising the reaction of a malonic ester with potassium hydroxide to give the corresponding malonic ester potassium salt of the formula (III) which is then reacted further with a chloroacetic ester to give a compound of the formula (V) followed by a ring closure reaction in which the compound of the formula (V) is reacted with a sodium or potassium alkoxide of the formula ZOR1 where R1, R2, R3 and K are each as defined in the description.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: June 16, 2015
    Assignee: BAYER INTELLECTUAL PROPERTY GMBH
    Inventors: Christian Funke, Taraneh Farida, Stefan Beeck, Norbert Lui, Berndt Maiwald
  • PROCESS FOR PREPARING SODIUM SALTS OR POTASSIUM SALTS OF 4-HYDROXY-2-OXO-2,5-DIHYDROFURAN-3-CARBOXYLATE
    Publication number: 20140148604
    Abstract: Process for preparing sodium or potassium salts of 4-hydroxy-2-oxo-2,5-dihydrofuran-3-carboxylic esters, comprising the reaction of a malonic ester with potassium hydroxide to give the corresponding malonic ester potassium salt of the formula (III) which is then reacted further with a chloroacetic ester to give a compound of the formula (V) followed by a ring closure reaction in which the compound of the formula (V) is reacted with a sodium or potassium alkoxide of the formula ZOR1 where R1, R2, R3 and K are each as defined in the description.
    Type: Application
    Filed: February 29, 2012
    Publication date: May 29, 2014
    Applicant: Bayer Intellectual Property GmbH
    Inventors: Christian Funke, Taraneh Farida, Stefan Beeck, Norbert Lui, Berndt Maiwald