Which of the following reaction show nucleophilic substitution of alkyl halideR-X?
Correct answer: B. RH+HX
- A. RX+H
- B. RH+HX
- C. 2RX+2Na-R-R+2NX
- D. R-X Mg-RMX
Explanation
The reaction of RX with KCN is a neucleophilic substitution reaction, as CN is a nucleophile that attacks the electrophilic carbocation.
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About Nucleophilic Substitution
Nucleophilic substitution replaces a leaving group in an alkyl halide when an electron-rich nucleophile attacks the carbon atom. The topic compares SN1 and SN2 mechanisms, including reaction conditions, substrate structure, solvent effects, nucleophile strength, carbocation formation and stereochemical changes, and distinguishes substitution from elimination.
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