Synthesis of δ-hetaryl-α, α-dicarbonylalkadienes and a study of their isomerization

ZA Krasnaya, SA Burova, VS Bogdanov…

Index: Krasnaya; Burova; Bogdanov; Smirnova Chemistry of Heterocyclic Compounds, 1997 , vol. 33, # 4 p. 410 - 422

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Abstract

Abstract The reaction of β-hetarylacrolein and β-hetaryl-α-methylacroleins with esters of acetoacetic and malonic acids was studied. The structures of the products obtained were established using 1 H and 13 C NMR and UV spectroscopy.(E) and (Z) isomers of α, α- dicarbonylalkadienes, their mixtures with the corresponding 2H-pyrans or exclusively 2H- pyrans are formed depending on the substitution in the starting aldehyde and the ester ...

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