Abstract
Derivative of methyl 5-(2-phenylvinyl)furoate, substituted with mononitro group in the benzene ring, was synthesized and its ester was hydrolyzed and derived to an acid amide. In the preparation of methyl 5-[2-(ο-nitrophenyl)vinyl]furoate, two kinds of crystals, considered to be cis and trans isomers, were obtained. Each was derived to the acid amide by the usual method but there was no evidence for cis-trans conversion during this reaction. Decarboxylation of the corresponding carboxylic acids gave the same substance, suggesting the cis-trans conversion to take place during this reaction.
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