1.) Look up the diamagnetic anisotropic effect of a carbonyl group. Which methyl group in 2,3-dimethylbenzaldehyde...

1.) Look up the diamagnetic anisotropic effect of a carbonyl group. Which methyl group in 2,3-dimethylbenzaldehyde will be more downfield (higher chemical shift)? Explain.

2.) Could 1H NMR help you tell the difference between 3E-hexene and 3Z-hexene? Explain.

3.) Consider the 1H NMR spectrum for 1,4-benzenedicarboxaldehyde. How does it differ from that of p-anisaldehyde? Discuss the number of peaks and the relative chemical shifts of these peaks.

4.) The ethyl and isopropyl groups are very common in organic chemistry. Draw the 1H NMR spectra for ethyl acetate and isopropyl acetate. You can look these spectra up on the www.sigma-aldrich.com website. Discuss the signature of the ethyl and isopropyl groups in terms of integrations and splittings.

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queen_honey_blossom answered 2 years ago

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