HKDSE Chemistry Question Review

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Question:

Above is the structure of paracetamol. Suggest how you would synthesize it.

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Solution:

We use acid anhydride to create the required peptide bond:

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Question:

Below is a dioxin:

Explain how to break it down.

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Solution:

The oxidation number of carbon atoms in dioxin is +1, which implies that it can be further oxidized.

Use hot, acidified KMnO_4 to reflux, and we will yield carboxyl compounds as end products.