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Among the choices of alkyl bromide , the...

Among the choices of alkyl bromide , the least reactive bromide in a `S_(N^(2))` reaction is :

A

1-bromopentane

B

2-bromo-2-methylbutane

C

1-bromo-3-methylbutane

D

1-bromo-2-methylbutane.

Text Solution

Verified by Experts

The correct Answer is:
B
The reactivity of different alkyl halides towards `S_(N^2)` reaction decreases in the order :
methyl halides gt `1^@` halides gt `2^@` halides gt `3^@` halides.
Since, 2-bromo-2-methylbutane is a tertiary bromide hence it is least rective among the given.
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NCERT FINGERTIPS-HALOALKANES AND HALOARENES-Chemical Reactions
  1. In the reaction given below: Which of the following statements is...

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  2. Tertiary alkyl halide are practially inert to substitution by SN^(2) ...

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  3. Among the choices of alkyl bromide , the least reactive bromide in a ...

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  4. Arrange the following compounds in order of their reactivity towards S...

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  5. Which of the following haloalkanes is most reactive?

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  6. Which of the following reactions does not take place?

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  7. Consider the following bromides: The correct order of S(N^1) reac...

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  8. Which of the following statement regarding S(N)1 reaction shown by alk...

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  9. Consider the following reaction: C6H5-underset(H)underset(|)overset(...

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  10. Which one of the following chlorohydrocarbons readily undergoes solvol...

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  11. Which of the following is the most reactive towards nucleophilic subst...

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  12. SN^1 reaction is fastest in

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  13. Which of the following alkyl halides is hydrolysed by S(N^(1)) mechani...

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  14. Which of the following will give enantiomeric pair on reaction with wa...

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  15. Which of the following is most reactive towards aqueous NaOH?

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  16. In the following pairs of halogen compounds, which compounds undergoes...

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  17. Which of the following haloalkanes reacts with aqueous KOH most easily...

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  18. Which alkyl halide exhibits complete racemisation in S(N^1) reaction?

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  19. The order of reactivity of various alkyl halides towards nucleophilic ...

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  20. Alkyl halides are formed when thionyl chloride and are refluxed in pr...

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