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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
Order of `S_N^2` reactivity is `1^@ gt 2^@ gt 3^@`
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Nucleophilic substitution reactions are of two types, substitution nucleophllic bimolecular (SN^2) and substitution nucleophilic unimolecular (SN^1) depending on molecules taking part in determining the rate of reaction. Reactivity of alkyl halide towards SN^1 and SN^2 reactions depends on various factors such as steric hindrance, stability of intermediate or transition state and polarity of solvent. SN^2 reaction mechanism is favoured mostly by primary alkyl halide then secondary and then tertiary. This order is reversed in case of SN^1 reactions. Among the choices of alkylbromide, the least reactive bromide in a SN^2 reaction is

Arrange the following alkyl chlorides in order of decreasing reactivity in an S_(N^(1) reaction : (I) isopropyl bromide , (II) propyl bromide (III) tert-butyl bromide , (IV) methyl bromide

The correct of reactivity of alkyl halides for S_(N^(1)) reaction is :

ERRORLESS-HELOALKANES AND HALOARENES-NCERT BASED QUESTIONS (Properties of Alkyl Halides)
  1. Which of the following haloalkanes is most reactive?

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  2. The order of rate of hydrolysis of alkyl halides 1^(@),2^(@),3^(@) and...

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

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  4. The hydrolysis of optically active 2-bromobutane with aqueous NaOH res...

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  5. Reactivity order of halides of dehydrohalogenation is

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  6. Which of the following is the example of SN^(2) reaction

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  7. Wurtz reaction of methyl iodide yields an organic compound X. Which on...

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  8. An alkyl halide may be converted into an alcohol by :

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  9. The order of reactivities of the following alkyl halides for a S(N^(2)...

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  10. The order of reactivity of following alcohols with halogen acids is………...

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  11. Which of the following alcohols will yield the corresponding alkyl chl...

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  12. Which reagent will you use for the following reaction. CH3CH2CH2CH3 ...

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  13. Arrange the following compounds in increasing order of their boiling p...

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  14. Which of the following are correct chain isomers of butane ? (i) <im...

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  15. What is the correct IUPAC name for CH3-underset(C2H5)underset(|)"CH"...

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  16. Molecules whose mirror image is non-superimposable over them are known...

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  17. Which is the correct increasing order of boiling points of the followi...

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  18. An mixture of two organic chlorine compounds was treated with sodium m...

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  19. In the following sequence of reactions, CH(3)CH(2)CH(2)Br overset("K...

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  20. In alkaline hydrolysis of a tertiary alkyl halide by aqueous alkali, i...

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