2,6,7-Trihydroxy-4,9-dioxodeca-2,5,7-trienoic and 2-hydroxy-2-(3-hydroxy-4-methyl-2,5-dioxocyclopent-3-en-1-ylidene)acetic acid esters: Synthesis and structural specificity
摘要:
Claisen condensation of acetone and butan-2-one with diethyl oxalate in the presence of metallic sodium leads to the formation of ethyl 2,6,7-trihydroxy-4,9-dioxodeca-2,5,7-trienoate and ethyl 2-hydroxy-2-(3-hydroxy-4-methyl-2,5-dioxocyclopent-3-en-1-ylidene)acetate, respectively.
Synthesis and structure of 2,6,7-trihydroxy-4,9-dioxodeca-2,5,7-trienoic acid esters
作者:E. M. Mozgunova、V. O. Koz’minykh、P. P. Mukovoz、E. N. Koz’minykh
DOI:10.1134/s1070428015010030
日期:2015.1
2,6,7-Trihydroxy-4,9-dioxodeca-2,5,7-trienoic acid esters and the corresponding sodium enolates were synthesized by condensation of acetone with dialkyl oxalates, and their structure was determined on the basis of IR, UV, and 1H NMR spectral data.