Question

Which of the following statement is/are correct about the following reaction?

(Question has multiple answer)

• A. Compound (D) is in major amount (68 %) and (E)is in minor (32 %).
• B. Compound (D) is in major amount (32 %) and (E)is in minor (68%).
• C. The aldehyde (D) arises from migration of H, and cresol (E) comes from migration of p-tolyl.
• D. H is a better migrator.

Answer 1

Answer: (A), (C), (D)

The correct options are
A Compound (D) is in major amount (68 %) and (E)is in minor (32 %).
C H is a better migrator.
D The aldehyde (D) arises from migration of H, and cresol (E) comes from migration of p-tolyl.

The yield of $\left(D\right)$ is greater than $\left(E\right)$ because $H$ is a better migrator than the Ar-group. Moreover, there are $2H$ and one $Ar-$group, so statistically the yield of $\left(D\right)$ is about twice that of $\left(E\right)$.