A study of the variations of the n.m.r. spectra of ethyl 5-formylpyrrole-2-carboxylate and pyrrole-2,5-dicarbaldehyde with temperature allowed a determination of the activation parameters by lineshape analysis of the formyl signals. The influence of the nature of the substituent on the spectrum is considered.
M. Farnier and T. Drakenberg, J. Chem. Soc., Perkin Trans. 2, 1975, 337 DOI: 10.1039/P29750000337
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