METHOD OF PRODUCING SALTS OF PHOSPHORYL-SUBSTITUTED 1,4-DICARBOXYLIC ACIDS Russian patent published in 2011 - IPC C07F9/53 

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing salts of phosphoryl-substituted 1,4-dicarboxylic acids for laboratory practice and use in industry, where said salts have general formula (I) where R denotes a straight or branched C₁-C₈-alkyl, phenyl optionally substituted with 1-5 substitutes selected from lower alkyl, lower alkoxy, halogen and dialkylamine; R' and R" denote OM, where M is a monovalent metal cation; Y denotes a single bond or a methylene group, involving heating secondary phosphine oxides of general formula R₂P(O)H, in which R is as described in formula (I), and corresponding dialkyl ethers of unsaturated 1,4-dicarboxylic acids in organic solvents in the presence of an alkaline catalyst at temperature 20-80°C with subsequent alkaline hydrolysis at temperature 20-80°C in single-reactor synthesis conditions.

EFFECT: novel efficient method of producing salts of phosphoryl-substituted 1,4-dicarboxylic acids.

3 cl, 6 ex