Which of the following is a correct conversion?

Step-by-step solution

Let us analyze each option step-by-step: Option (A): The reactant is 5-bromo-1,3-cyclopentadiene. Reacting it with Mg in ether forms cyclopentadienyl magnesium bromide, which is a Grignard reagent. Since ethanol ( C₂H₅OH ) has an acidic proton, it will undergo an acid-base reaction with the Grignard reagent to yield cyclopentadiene and Mg(OC₂H₅)Br . The product shown is an ether, which is incorrect. Option (B): The reactant is 4-bromo-4-methylcyclohexanone. Step (i): Zn-Hg, HCl (Clemmensen reduction) reduces the ke