Compounds A and B have the same molecular formula:

CHEMISTRY · Multi-part · A Level · Chemistry · Organic analysis and spectroscopy · Organic analysis and spectroscopy

Problem

Compounds A and B have the same molecular formula: C3H6O2\text{C}_3\text{H}_6\text{O}_2 . Absorptions are observed in the IR spectra of the two compounds at the following frequencies: Compound A: 3000 cm−13000\text{ cm}^{-1} (broad), 1730 cm−11730\text{ cm}^{-1} , 1230 cm−11230\text{ cm}^{-1} Compound B: 1720 cm−11720\text{ cm}^{-1} , 1230 cm−11230\text{ cm}^{-1} (a) Use this information to determine the structure and name of compound A. (b) Compound B could be one of two possible isomers. Draw and name these two isomers.

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