Predict the product(s) that would result when molecules (a)–(p) are allowed to react under the following conditions: (ix) PCC; (x) H₂CrO₄ , H₂O. If no reaction occurs, write 'no reaction.'
(o)

Verified step by step guidance

1. Identify the functional group present in the given molecule. The structure shows a secondary alcohol attached to a benzene ring.
2. Understand the role of PCC (Pyridinium chlorochromate) in organic reactions. PCC is a mild oxidizing agent that typically oxidizes primary alcohols to aldehydes and secondary alcohols to ketones.
3. Predict the product of the reaction with PCC. Since the molecule contains a secondary alcohol, PCC will oxidize it to a ketone. The hydroxyl group (OH) will be converted to a carbonyl group (C=O).
4. Consider the reaction with H₂CrO₄ and H₂O. This is a stronger oxidizing agent compared to PCC and can further oxidize primary alcohols to carboxylic acids. However, secondary alcohols are oxidized to ketones, similar to PCC.
5. Conclude that both PCC and H₂CrO₄ will oxidize the secondary alcohol to a ketone, resulting in the same product for this specific molecule.

Key Concepts

PCC (Pyridinium Chlorochromate)

PCC is a mild oxidizing agent commonly used in organic chemistry to oxidize primary alcohols to aldehydes and secondary alcohols to ketones without over-oxidation. It is less aggressive than other oxidants, making it suitable for sensitive substrates. Understanding its reactivity is crucial for predicting the products of reactions involving alcohols.

H₂CrO₄ (Chromic Acid)

H₂CrO₄ is a strong oxidizing agent that can oxidize primary alcohols to carboxylic acids and secondary alcohols to ketones. It is more powerful than PCC and can lead to complete oxidation of alcohols. Recognizing the strength of this oxidant helps in predicting the final products of reactions involving alcohols and their oxidation states.

Oxidation States and Functional Group Transformations

In organic chemistry, oxidation refers to the increase in oxidation state, often involving the addition of oxygen or the removal of hydrogen. Understanding how different functional groups transform under oxidation conditions is essential for predicting reaction outcomes. This includes recognizing when no reaction occurs, particularly with tertiary alcohols, which are resistant to oxidation.