I've got the spectra for C5H8O2 (the spectral database confirms that it's ethyl acrylate) and treatment with hot aq. HCL causes the signals in the 1N NMR spectrum at d 1.3 and 4.2 to disappear. Does anyone know why this happens? Thanks!
I'm looking at a (uni) past paper and it has one of those typical Qs - a molecular weight determination has shown that an unknown peptide E is a pentapeptide and that it contains the amino acids glycine, tryptophan, proline, valine and alanine. Treatment of pentapeptide E with carboxypeptidase...