Question

Consider the given reaction.which of following statements are correct for above reaction?

• A. Product formation takes place due to the breaking of $O-Ts$.
• B. The reaction is proceed via $S{N}_2$
• C. The reaction is proceed via $S{N}_1$
• D. Configuration of product is $\left(R\right)$.

Answer 1

Answer: (B), (D)

Configuration of product is $\left(R\right)$.
The reaction is proceed via $S{N}_2$

The carbon atom to which tosyl group is attached is a secondary carbon atom.

Hence, the reaction proceeds through $S{N}_2$ mechanism. Thus the option B is correct and option C is incorrect.

The product is formed due to the nucleophilic attack of cyano group. $-OTs$ is the leaving group. Thus the option A is incorrect.

The $S{N}_2$ reactions involve inversion of configuration. hence, the product will have $R$ configuration. Thus option D is correct.