Question

The proton NMR spectral information shown in this problem is for a compound with formula $\mathrm{C}_{10} \mathrm{H}_{10} \mathrm{O}_3$. A disubstituted aromatic ring is present in this compound. Expansions are shown for each of the unique protons. Determine the $J$ values and draw the structure of this compound. The doublets at 6.45 and $7.78 \mathrm{ppm}$ provide an important piece of information. Likewise, the broad peak at about $12.3 \mathrm{ppm}$ provides information on one of the functional groups present in this compound. Assign each of the peaks in the spectrum. DIAGRAM CANT COPY

   The proton NMR spectral information shown in this problem is for a compound with formula $\mathrm{C}_{10} \mathrm{H}_{10} \mathrm{O}_3$. A disubstituted aromatic ring is present in this compound. Expansions are shown for each of the unique protons. Determine the $J$ values and draw the structure of this compound. The doublets at 6.45 and $7.78 \mathrm{ppm}$ provide an important piece of information. Likewise, the broad peak at about $12.3 \mathrm{ppm}$ provides information on one of the functional groups present in this compound. Assign each of the peaks in the spectrum.
DIAGRAM CANT COPY

Introduction to Spectroscopy

Donald L. Pavia,… 4th Edition

Chapter 5, Problem 9

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Step 1

This indicates that the compound contains 10 carbon atoms, 10 hydrogen atoms, and 3 oxygen atoms. The presence of 3 oxygen atoms suggests the possibility of functional groups such as alcohols, ethers, or carboxylic acids. Show more…

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The proton NMR spectral information shown in this problem is for a compound with formula $\mathrm{C}_{10} \mathrm{H}_{10} \mathrm{O}_3$. A disubstituted aromatic ring is present in this compound. Expansions are shown for each of the unique protons. Determine the $J$ values and draw the structure of this compound. The doublets at 6.45 and $7.78 \mathrm{ppm}$ provide an important piece of information. Likewise, the broad peak at about $12.3 \mathrm{ppm}$ provides information on one of the functional groups present in this compound. Assign each of the peaks in the spectrum. DIAGRAM CANT COPY

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