Questions from Organic Chemistry


Q: A compound with the molecular formula C8H10 produces three signals in its

A compound with the molecular formula C8H10 produces three signals in its 13C NMR spectrum and only two signals in its 1H NMR spectrum. Deduce the structure of the compound.

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Q: Identify reagents that can be used to accomplish each of the transformations

Identify reagents that can be used to accomplish each of the transformations shown here:

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Q: The C=C bond in 2-cyclohexenone produces an unusually

The C=C bond in 2-cyclohexenone produces an unusually strong signal. Explain using resonance structures.

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Q: trans-2-Butene does not exhibit a signal in the

trans-2-Butene does not exhibit a signal in the double-bond region of the spectrum (1600–1850 cm−1); however, IR spectroscopy is still helpful in identifying the presence of the double bond. Identify...

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Q: As explained previously, the concentration of an alcohol can be selected

As explained previously, the concentration of an alcohol can be selected such that both a broad signal and a narrow signal appear simultaneously. In such cases, the broad signal is always to the right...

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Q: For each of the following IR spectra, identify whether it is

For each of the following IR spectra, identify whether it is consistent with the structure of an alcohol, a carboxylic acid, or neither:

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Q: For each of the following IR spectra, determine whether it is

For each of the following IR spectra, determine whether it is consistent with the structure of a ketone, an alcohol, a carboxylic acid, a primary amine, or a secondary amine:

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Q: Carefully consider the structure of 2,3-dimethyl-2

Carefully consider the structure of 2,3-dimethyl-2-butene. There are twelve Csp3−H bonds, and they are all identical. Nevertheless, there is more than one signal just to the right of 3000 cm−1 in the...

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Q: Match each compound with the appropriate IR spectrum: /

Match each compound with the appropriate IR spectrum:

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Q: Chrysanthemic acid is isolated from chrysanthemum flowers. The IR spectrum of

Chrysanthemic acid is isolated from chrysanthemum flowers. The IR spectrum of chrysanthemic acid exhibits five signals above 1500 cm−1. Identify the source for each of these signals....

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