An SN2 reaction at asymmetric carbon of a compound always gives:
Correct answer: D. A single stereoisomer
- A. An enantiomer of the substance
- B. A product with opposite optical rotation
- C. A mixture of diastereomers
- D. A single stereoisomer
Explanation
In SN2 reaction, inversion of configuration occurs. Since the reactant and the product are not enantiomers, the sign of optical rotation may or may not change, hence single stereoisomer is obtained. Hence, (d) is the correct answer.
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About Alkyl Halides
Alkyl halides are named and related to their carbon-halogen structure, polarity and reactivity. The key reactions are nucleophilic substitution by SN1 and SN2 mechanisms and elimination by E1 and E2 mechanisms, including how substrate structure, nucleophile, base, solvent and temperature influence substitution versus elimination.
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