Chemical Reactions of Haloarenes

IMPORTANT

Chemical Reactions of Haloarenes: Overview

This Topic covers sub-topics such as Resonance Effect, Chemical Reactions of Haloarenes, Sulphonation of Haloarenes, Reaction of Haloarenes with Metals, Electron Rich Nature of Benzene Nucleus and, Nucleophilic Substitution Reactions of Haloarenes

Important Questions on Chemical Reactions of Haloarenes

MEDIUM
IMPORTANT

In which of the following conversions oxidation is taking place

(i) propanone to propene

(ii) benzoic acid to benzaldehyde

(iii) bromobenzene to 1-phenylethanol

MEDIUM
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Benzyl chloride   ( C 6 H 5 C H 2 Cl ) can be prepared from toluene by chlorination with –

EASY
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The structure of the major organic product expected form the following reaction are

C6H6 (Benzene)+(CH3)2CHCH2ClAlCl3

MEDIUM
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In the following reaction, the nucleophile (MeO ) will displace which of the halogen atoms most readily?

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HARD
IMPORTANT

Examine the structural formula shown below and find out how many compounds undergo electrophilic nitration more rapidly than fluoro benzene.

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MEDIUM
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Assertion: In mono haloarenes, electrophilic substitution occurs at ortho and para positions.

Reason: Halogen atom is a ring deactivator.
 

MEDIUM
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The metal used in the Ullmann reaction is

EASY
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Why does benzene undergo an electrophilic substitution reaction easily?

EASY
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Explain electrophilic substitution reaction in haloarenes.

MEDIUM
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Which of the following statements are correct?

 (i) Inductive effect & resonance effect is possible in chlorobenzene

(ii)  Resonance effect dominates over inductive effect in Anisole
(iii) P-nitrobenzoic acid is less acidic than $\mathrm{m}$-nitrobenzoic acid
(iv) Diphenylamine is more basic than aniline

MEDIUM
IMPORTANT

 Electrophilic substitution reactions of Haloarenes are

MEDIUM
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 Electrophilic substitution reactions of Haloarenes are

HARD
IMPORTANT

Write the mechanism of the electrophilic substitution reaction of Haloarenes.

MEDIUM
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Arrange the following compounds in incrensing order of their rate of reaction towards hydroxyl ion OH-.

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IIQuestion Image

III Question Image

IV Question Image

MEDIUM
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The halogen compound which will not react with phenol to give ethers is

MEDIUM
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The halogen compound which will not react with phenol to give ethers is

EASY
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The rates of reaction of NaOH with:

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follow the order:-

EASY
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In the questions arrange the compounds in increasing order of rate of reaction towards nucleophilic substitution.

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HARD
IMPORTANT

Aryl halides are less reactive towards nucleophilic substitution reaction as compared to alkyl halides due to:

EASY
IMPORTANT

Which of the following reaction gives ethane?