Assignment:
Provide an interpretation for all protons in the 1H NMR spectrum of 4-vinylbenzoic acid and indicate how the 1H NMR spectrum of the corresponding methyl ester would differ from that of the acid.
On the 1H spectrum, see a quartet around 6.8ppm which don't know where it comes from, because I think it should be a triplet and also why there is two doublets, when I think there should only be one. The singlet at 7.2ppm is probably the H of -OH. and the two doublets at around 7.5 and 8.0ppm are Ar-H protons.
Provide complete and step by step solution for the question and show calculations and use formulas.
Please review the document enclosed here:
Download:- NMR Spectrum Interpretation.rar