Methyl-2-hydroxy-2-(3-hydroxy-4-methyl-2,5-dioxo-3-cyclopenthenylydene)acetate: receiving and structure
The complex ester Claisen condensation of 2-butanone with dimethyloxalate at presence of sodium hydride were studied. As a result the first received methyl ester of 2-hydroxy-2-(3-hydroxy-4-methyl-2,5-dioxo-3-cyclopenthe-nylydene)-acetic acid, the features of its structure were studied based on IR, NMR spectroscopy data