Question

For the following reaction, pick out the best term which describes its mechanism.

• A. $S_{N}i$
• B. $S_{N}2$
• C. $S_{N}NGP$
• D. None of the above

Answer 1

The correct option is C $S_{N}NGP$

In the given reaction, the substrate have sulphur group which is a neighbouring group. It will act as nucleophile and result in the $S_{N}NGP$ reaction.

When a nucleophile is a part of the reacting molecule, the substitution process is known as intramolecular $S_{N}NGP$.

Mechanism of the given reaction:
Hence, it shows $S_{N}NGP$ reaction mechanism.