Question

In the following reaction A is:

• A. methyl cyclopentane
• B. 1,2-dimethylcyclobutane
• C. ethylcyclopentane
• D. cyclohexane

Answer 1

The correct option is D

cyclohexane

Solution:

Step 1: Cyclohexane reacts with ${\mathrm{Br}}_2$, hv to form Bromo cyclohexane.

Step 2: Bromo cyclohexane on reaction with alc.$\mathrm{KOH}$ leads to the formation of cyclohex-1-ene.

Step 3: Cyclohex-1-ene on treatment with ${\mathrm{O}}_3$$/{\mathrm{Me}}_2\mathrm{S}$ forward by addition of dil.$\mathrm{NaOH}$ will leads to the formation of the desired product.

So, the correct answer is Option D.