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AN UNUSUAL RESULT OF THE REACTION OF α-ACETYLENE ALDEHYDES, PYRIDINES, AND MALONIC ACID. SYNTHESIS AND STRUCTURE OF NOVEL PYRIDINE BETAINES

Александр А. Голованов, Сергей А. Даньков, Сергей А. Соков, Павел А. Мельников, Антон И. Уколов, Евгения Д. Воронова, Анна В. Вологжанина, Александр С. Бунев
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Abstract


5-Aryl-2-carboxy-5-(pyridin-1-ium-1-yl)penta-2,4-dienoates, previously unknown pyridine betaines, were formed in 32–70% yields as a result of the reaction of arylpropynals, substituted pyridines, and malonic acid instead of the expected 5-arylpent-2-en-4-ynoic acids. The molecular structure of the novel compounds was studied by X-ray structural analysis.

Authors: Aleksander А. Golovanov*, Sergei А. Dan'kov, Sergey А. Sokov, Pavel А. Melnikov, Anton I. Ukolov, Evgeniya D. Voronova, Anna V. Vologzhanina, Aleksander S. Bunev


Keywords


α-acetylene aldehydes; malonic acid; pyridines; pyridine betaines; condensation; X-ray structural analysis

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