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n this experiment, two equivalents of benzaldehyde were used, and the desired product was dibenzylideneacetone. how can you use the attached proton nmr of the product to show that you did not isolate the product of a single aldol condensation (that is, benzylideneacetone).

Sagot :

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.

To learn more about aldol condensation here

https://brainly.com/question/29765313

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