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http://dx.doi.org/10.5012/bkcs.2013.34.3.936

Synthesis and NMR Studies of (E)-1-Aryl-3-(2-pyrrolyl)-2-propenones and (E)-3-Aryl-1-(2-pyrrolyl)-2-propenones  

Han Lee, In-Sook (Department of Science Education, Kangwon National University)
Jeoung, Eun Ji (Department of Chemistry, Kangwon National University)
Lee, Chang Kiu (Department of Chemistry, Kangwon National University)
Publication Information
Bulletin of the Korean Chemical Society / v.34, no.3, 2013 , pp. 936-942 More about this Journal
Abstract
Series of (E)-1-aryl-3-(2-pyrrolyl)-2-propenones, that were aldol condensation products between pyrrole-2-carbaldehyde and m- and p-substituted acetophenones, were prepared and their $^1H$ and $^{13}C$ NMR spectra were examined to obtain the information on the conformation of the enone system. Similar studies were carried out with (E)-3-aryl-1-(2-pyrrolyl)-2-propenones that were prepared from 2-acetylpyrrole and m- and p-substituted benzaldehydes. The substituent chemical shifts were studied by applying the Hammett relationship.
Keywords
$^1H$ and $^{13}C$ NMR; Pyrrole; Aldol condensation; Conformation of enones;
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