Question

A compound has an IR absorption band near 1700 cm-1, 1H NMR signal between 9 and...

A compound has an IR absorption band near 1700 cm-1, 1H NMR signal between 9 and 10 δ, and a 13C NMR signal near 200 δ . What is this compound most likely?

Carboxylic acid, ketone, alcohol, or aldehyde.?

  

Science   Chemistry   
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Answer #1

For IR peaks : IR absorption band near 1700 cm-1

So ,the possiblity of alcohol is ruled out.

It may be ketone, aldehyde of carboxylic acid.

For 1H NMR : 1H NMR signal between 9 and 10 δ

The one between 9 and 10 is aldehyde.

So, possiblity of carboxyclic acid and ketone is ruled out.

Fo13C NMR : 13C NMR signal near 200 δ

Hence, it confirmed the compound is most likely to be aldehyde.

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