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Diethyl ethoxymethylenemalonate is used for synthesis of pyrido[3,2-e]pyrimido[1,2-c]pyrimidines. Initially, it was used to monitor lysine decarboxylase activity. It is useful in the determination of amino acids by precolumn derivatization by using reversed-phase high-performance liquid chromatography (HPLC). It plays an important role in the Gould-Jacobs reaction to prepare quinolines. For example, anile reacts with this reagent to give 4-hydroxyquinoline. It acts as an intermediate in the production of flumequine, which is a fluoroquinolone antibiotic.
Stable equivalent of the ɑ-formylmalonate, valuable synthetic building block, particularly in heterocyclic syntheses. Review: Adv. Het. Chem., 54, (1992).
Can be converted to the unstable diethyl methylenemalonate by catalytic reduction and elimination of ethanol on distillation, see: Org. Synth. Coll., 4, 298 (1963).
Has been used for the protection of the amino group of ɑ-amino acids, allowing clean esterification by O-alkylation. The protecting group can be removed using bromine in chloroform: Synthesis, 544 (1989):
For N-protection of aminoglycosides prior to O-acetylation, see: J. Carbohydr. Chem., 14, 1133 (1995). Chlorine in chloroform at 0oC was used for deprotection.
Kim, Y. H.; Kim, H. J.; Shin, J. H.; Bhatia, S. K.; Seo, H. M.; Kim, Y. G.; Lee, Y. K.; Yang, Y. H.; Park, K. Application of diethyl ethoxymethylenemalonate (DEEMM) derivatization for monitoring of lysine decarboxylase activity. J. Mol. Catal. B: Enzym. 2015, 115, 151-154.
Megias, C.; Giraldo, I. C.; Calle, J. G.; Vioque, J.; Alaiz, M. Determination of l-canavanine and other free amino acids in Vicia disperma (Fabaceae) seeds by precolumn derivatization using diethyl ethoxymethylenemalonate and reversed-phase high-performance liquid chromatography. Talanta 2015, 131, 95-98.
Dichiarazioni di rischio (UE): H303-H315-H319-H334-H317
May be harmful if swallowed. Causes skin irritation. Causes serious eye irritation. May cause allergy or asthma symptoms or breathing difficulties if inhaled. May cause an allergic skin reaction.
Dichiarazioni precauzionali: P284-P261-P280a-P305+P351+P338-P342+P311a-P501a
Wear respiratory protection. Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves and eye/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If experiencing respiratory symptoms: Dispose of contents/container in accordance with local/regional/national/international regulations.