Respuesta :
The two equivalents of benzaldehyde were used, and the desired product was dibenzalacetone has the proton NMR signal is 5 signals.
The reaction of the two equivalents of benzaldehyde with the acetone show the aldol condensation and form the product is dibenzalacetone.
the dibenzalacetone shows the following proton NMR signals:
proton a : 7.1 ppm , doublet = 1 proton
proton b : 7.8 ppm doublet = 1 proton
proton c : 7.5 ppm doublet = 2 protons
proton d : 7.4 ppm is the multiplet = 2 protons
proton e : 7.3 ppm multiplet
The chemical shifts are based on the protons chemical environment. the coupling constant is 12 Hz for the olefinic hydrogens.
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