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प्रश्न
What happens when methyl chloride is treated with KCN?
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उत्तर
\[\ce{\underset{Methyl chloride}{CH3 - Cl} + KCN ->[EtOH-H2O, \Delta][nucleophilic substitution] \underset{Methyl cyanide}{CH3 - C ≡ N} + KCl}\]
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संबंधित प्रश्न
Which would undergo SN2 reaction faster in the following pair and why ?
Write the structure of the major organic product in the following reaction:
\[\ce{CH3CH2Br + KCN ->[aq{.} ethanol]}\]
Out of C6H5CH2Cl and C6H5CHClC6H5, which is more easily hydrolysed by aqueous KOH.
The treatment of alkyl chlorides with aqueous KOH leads to the formation of alcohols but in the presence of alcoholic KOH, alkenes are major products. Explain.
The stability order for carbocation is _______.
(A) 2° > 3° > 1°
(B) 3° > 2° > 1°
(C) 3° > 1° > 2°
(D) 1° > 3° > 2°
Given reasons: SN1 reactions are accompanied by racemization in optically active alkyl halides.
In the reaction, \[\ce{R - X + NaOR' -> ROR’ + X}\] ( – ve ion). The main product formed is:
Halogenation of alkanes is ____________.
Which one is most reactive towards SN1 reaction?
Which of the following is the correct order of decreasing SN2 reactivity?
Complete the following analogy:
Same molecular formula but different structures: A : : Non superimposable mirror images: B
A primary alkyl halide would prefer to undergo ______.
Cyanide ion acts as an ambident nucleophile. From which end it acts as a stronger nucleophile in aqueous medium? Give reason for your answer.
Why are aryl halides less reactive towards nucleophilic substitution reactions than alkyl halides?
The major product formed in the following reaction is:
Racemisation occurs in ______.
Arrange the following compounds in increasing order of reactivity towards SN2 reaction.
2-Bromopentane, 1-Bromopentane, 2-Bromo-2-methylbutane
Complete the reaction with the main product formed:
Which alkyl halide from the following pair would you expect to react more rapidly by an SN2 mechanism? Explain your answer.
\[\begin{array}{cc}
\ce{CH3CHCH2CH2Br}\\
|\phantom{.............}\\
\ce{CH3}\phantom{..........}\\
\end{array}\] or \[\begin{array}{cc}
\ce{CH3CH2CHCH2Br}\\
|\\
\phantom{...}\ce{CH3}\\
\end{array}\]
