Process for the production of succinylosuccinic diester

Details Process for the production of succinylosuccinic diester Process for the production of succinylosuccinic diester

C - Chemistry, Metallurgy

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C

260/479.4

C07C 69/74 (2006.01) C07C 55/00 (2006.01) C07C 67/00 (2006.01) C07C 69/40 (2006.01) C07C 69/66 (2006.01) C07C 69/67 (2006.01) C07C 69/757 (2006.01) C07C 69/95 (2006.01)

Patent

CA 1065337

PROCESS FOR THE PRODUCTION OF SUCCINYLOSUCCINIC DIESTER ABSTRACT A process for the production of succinylosuccinic acid diester. The process includes reacting a ?-haloacetoacetic ester with a strong base. The reaction is conducted in the presence of at least one dispersing agent and an aqueous buffer solution of at least one inorganic salt at a pH of 8 to 10. The pH is kept constant during the reaction by the addition of a strong base as needed. The reaction is conducted at a tempera- ture between -10° and 10°C. and preferably between -2° and 0°C. The succinylosuccinic acid diester can be isolated by any convenient method such as filtering or centrifuging it from the reaction solution.

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