What is the final product (B) of this sequence?

Question

Aicharya · Accepted Answer

$(A)\mathrm{Ph}-\mathrm{CH}_{2}-\mathrm{Br} \stackrel{\mathrm{KCN}}{\longrightarrow} \mathrm{Ph}-\mathrm{CH}_{2}-\mathrm{C} \equiv \mathrm{N} \stackrel{\mathrm{H}_{3} \mathrm{O}^{+}}{\longrightarrow} \mathrm{Ph}-\mathrm{CH}_{2}-\mathrm{CO}_{2} \mathrm{H}(\mathrm{B})$

What is the final product (B) of this sequence?

Solution