O etil cianoacetato, CAS 105-56-6, é o éster etílico do ácido cianoacético e um intermediário cianoéster reativo com fórmula C5H7NO2 e massa molecular de 113,11 g/mol. Em perfis de impurezas, pode surgir de etapas de esterificação ou transesterificação e permanecer como resíduo relacionado ao processo em rotas que envolvem compostos de metileno ativado. As funções nitrilo e éster determinam polaridade e padrões de fragmentação, tornando LC-MS/MS e GC-MS as técnicas preferidas para identificação e quantificação em nível de traço. A avaliação integra estratégias de controle de impurezas devido à reatividade e relevância toxicológica de espécies cianofuncionais.
Referências
“Solvent-Free Microwave Enhanced Knoevenagel Condensation of Ethyl Cyanoacetate with Aldehydes.†Synthetic Communications, 2021, www.tandfonline.com/doi/abs/10.1080/00397919908086438. “Solvent-Free Synthesis of Ethyl a-Cyanocinnamate in the Presence of CaO.†Synthetic Communications, 2021, www.tandfonline.com/doi/abs/10.1081/SCC-120037918?journalCode=lsyc20. ?
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