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Dienoic acids,synthesis and 13C NMR spectral analysis
Authors:Nelson Frighetto  Carmen L.P. Silveira  Francisco de A.M. Reis  Eva G. Magalhães  Edmundo A. Rúveda
Affiliation:Instituto de Química, Universidade Estadual de Campinas, C.P. 1170, 13100 Campinas, São Paulo, Brasil
Abstract:A preparation of E,E-2,4-dienoic acids, together with the assignments of their 13C NMR signals and the shifts observed after transformation into their sodium salts, is described. The stereochemistry of the double bonds of 3,5-dienoic esters, obtained from 2,4-dienoic acids, on the basis of 13C NMR data, is also presented.
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