NEET-XII-Chemistry
exam-2 year:2016
- #153Consider the reaction
``\ce {CH3CH2CH2Br + NaCN \rightarrow CH3CH2CH2CN + NaBr}``
This reaction will be the fastest in
(1) N,N'-dimethylformamide (DMF)
(2) water
(3) ethanol
(4) methanoldigAnsr: 1Ans : (1)
Sol. CH3-CH2-CH2Br + NaCN ï‚®CH3CH2CH2CN+
NaBr
This reaction follows by SN2 path, which is favoured
by polar aprotic solvents like DMF, DMSO, etc.
DMF (Dimethyl formamide)
H C
O
N
Me
Me