Question

Cyclobutyl bromide on treatment with magnesium in dry ether forms an organometallic compound $(A)$. The organometallic compound reacts with ethanal to give an alcohol $(B)$ after mild acidification. Prolonged treatment of alcohol $(B)$ with an equivalent amount of $HBr$ gives $(C)$. What will be the product ${}^{\prime }{C}^{\prime }$?

• A. 1-Chloro-1-ethylcyclopentane
• B. 1-Bromo-1-methylcyclopentane
• C. 3-Bromo-2-methylcyclopentane
• D. None of these

Answer 1

Answer: (B)

Correct answer is (b) 1-Bromo-1-methylcyclopentane