METHOD FOR PRODUCING PROPIOLIC ACID ALKALI METAL SALT

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a propiolic acid alkali metal salt by a new reaction route. SOLUTION: Acetylene and carbon dioxide are supplied to an alkyl alkali metal-containing solvent to give a mixture of an acetylenedicarboxylic acid dialkali metal salt and propiolic acid alkali metal salt. Then the mixture is extracted with water and the acetylenedicarboxylic acid dialkali metal salt is converted into an acetylenedicarboxylic acid monoalkali metal salt. Then the acetylenedicarboxylic acid monoalkali metal salt is converted into a propiolic acid alkali metal salt by heating and decarboxylation.