Question

Identify the major products A and B respectively in the following set of reactions.

• A.

  

• B.

  

• C.

  

• D.

  

Answer 1

The Correct Option is A

To identify the major products A and B, let's analyze the reactions step by step:

1. The given compound is a cyclohexanol derivative with a methyl group attached to it.
2. The first reaction involves treating this alcohol with concentrated \(\text{H}_2\text{SO}_4\) under heating.
3. This treatment typically leads to dehydration of alcohols, resulting in the formation of an alkene.
4. The most likely alkene product, given the starting material, involves the elimination of water (H₂O) across the least hindered carbon atoms, following Zaitsev's rule.
5. Product A is thus a cyclohexene derivative.
6. Next, the alkene is treated with acetyl chloride (CH₃COCl) in the presence of pyridine.
7. Pyridine acts as a catalyst to promote the reaction between the alkene and acid chloride, leading to electrophilic addition or formation of a more stable stereoisomer.
8. The major product B will be an acylated cyclohexane.

Therefore, the correct answer is the image representing these transformations. This is consistent with the given correct answer option.

Answer 2