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Identify the unknown alcohol and ester based on the NMR AND IR spectra

Identify the unknown alcohol and ester based on the NMR AND IR spectra

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Answer #1

NMR spectra of an ester gives specific signals at different ppm, for R groups attached to ester group as well as -OR groups attached to carbonyl group. As well it gives specific signal for R group attached to OH and a weak signal for OH group. Also based on number of NMR signal the skeleton of the molecule can be drawn if the molecular formula is know.

R=CH3, OR=OCH3

IR spectroscopy is meant to identify functional groups based on the stretching frequency of different functional group the ester and alcohol functional group can be identified. IR spectroscopy confirms the functional group present in a compound.

Thus an unknown ester and an alcohol can be identified by NMR and IR spectroscopy

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