Catalyst system and process for one-step carbonylation synthesis of dimethyl succinate

Abstract

The application discloses a catalyst system and a method for synthesizing dimethyl succinate through one-step carbonylation, and belongs to the technical field of chemical industry. The catalyst system can catalyze propenoic acid, methanol and CO to perform one-step carbonylation reaction, and directly synthesize dimethyl succinate; the catalyst system comprises a Pd precursor, a phosphine ligand and an auxiliary agent; the mass ratio of the three is 0.1-5:0.2-10:0.5-50. The application further discloses a method for synthesizing dimethyl succinate by using the catalyst system, which takes propenoic acid, carbon monoxide and methanol as raw materials to synthesize dimethyl succinate through one-step carbonylation. The application can realize one-step production of dimethyl succinate, has the advantages of simple process, mild reaction condition in the production process, high catalyst activity, long service life of the catalyst, high product yield and strong technical competitive advantage.

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