Question

An SN${}^2$ reaction at an asymmetric C of a compound always gives:

• A. An enantiomer of the substrate
• B. A product with opposite optical rotation
• C. A mixture of diastereomers
• D. A single stereoisomer

Answer 1

The correct option is D A single stereoisomer

An $S_{N}2$ reaction at an asymmetric C of a compound always gives a single stereoisomer. An $S_{N}2$ reaction at an asymmetric C of a compound involves inversion of configuration.