Question

A compound (X) reacts with thionyl chloride to give a compound (Y). (Y) reacts with $Mg$ to form a Grignard reagent, which is treated with acetone and the product is hydrolysed to give 2-methyl-2- butanol. What are structural formulae of (X) and (Y) ?

• A. X = Acetic acid Y = Ethyl Chloride
• B. X = Acetaldehyde Y = Ethyl Chloride
• C. X = Ethyl Alcohol Y = Ethyl Chloride
• D. X = Propyl alcohol Y = Propyl Chloride

Answer 1

The correct option is C X = Ethyl Alcohol Y = Ethyl Chloride

The reaction can be written as, shown in the above image.
Hence, $X$ is Ethyl alcohol.
and $Y$ is Ethyl chloride.