Patent ID: 8889898
Filing Date: 2014-11-18
Classification: C07C,C08F

Abstract:
1. A process for preparing a 2,3 disubstituted succinate comprising the steps of: a) reacting a compound [1] of formula with a compound [2] of formula to form a compound [3] of formula followed by b) reacting compound [3] with a compound of formula R2-X to form a compound [4] of formula and c) reacting compound [4] with a compound of formula R3-X to form a 2,3 disubstituted tricarboxylate compound [5] of formula followed by d) first hydrolysing compound [5] using an inorganic base and then decarboxylating the hydrolysed compound using an inorganic acid to yield a 2,3 disubstituted succinic acid compound [6] of formula wherein R and R1 may be the same or different and are selected from the group consisting of branched or linear C R2 and R3 may be the same or different and are selected from the group consisting of C X is a halogen, wherein the steps a), b) and c) are carried out in the presence of a base which may be the same or different for each of said steps.