Patents Assigned to Alfa-Synthon AB
  • Process for the preparation of alkyl 5-(dicarboximido) levulinate and alkyl 4-oxo-pentenoate
    Patent number: 8022229
    Abstract: A method of manufacturing esters of dicarboxyimidolevulinic acid and alkyl trans-4-oxo-2-pentenoate. This method includes two reaction steps, wherein the first step of said two reaction steps is a bromination of alkyl-levulinate, to obtain alkyl-(3 and 5)-bromolevulinate, and the second step of said two reaction steps is a synthesis of esters of dicarboxyimidolevulinic acid and alkyl trans-4-oxo-2-pentenoate, by reacting the alkyl-(3 and 5)-bromolevulinate obtained in said first step with dicarboxyimide anion.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: September 20, 2011
    Assignee: Alfa-Synthon AB
    Inventor: Baruch Yom-Tov