The reaction proceeds via SN2 mechanism. It is a unimolecular nucleophilic substitution reaction. The reaction is hence favoured in the presence of a polar aprotic solvent. DMF is a polar aprotic solvent. So, the reaction is the fastest with DMF solvent.
Consider the reaction C H_3 C H_2 C H_2 B + N a C N→ C H_3 C H_2 C H_2 C N+ N a B This reaction will be the fastest in
NEET UG 2016 — Chemistry Organic Chemistry
2016mcqmedium
Consider the reaction
CH3CH2CH2Br+NaCN→CH3CH2CH2CN+NaBr
This reaction will be the fastest in
Official previous-year question
Held on 30 Apr 2016 · Verified 9 Jul 2026.
Options
- A
Ethanol
- B
Methanol
- C
N, N' - dimethylformamde (DMF)
- D
Water
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