16900-64-4Relevant articles and documents
An unusual result of the reaction of α-acetylene aldehydes, pyridines, and malonic acid. Synthesis and structure of novel pyridine betaines
Golovanov, Aleksander А.,Dan’kov, Sergei А.,Sokov, Sergey А.,Melnikov, Pavel А.,Ukolov, Anton I.,Voronova, Evgeniya D.,Vologzhanina, Anna V.,Bunev, Aleksander S.
, p. 93 - 96 (2019/02/26)
[Figure not available: see fulltext.] 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 inst
