Methods of Preparation of Haloalkanes and Haloarenes

IMPORTANT

Methods of Preparation of Haloalkanes and Haloarenes: Overview

This topic covers concepts, such as, Preparations of Haloalkanes, Preparation of Haloalkanes From Alcohols, Preparation of Allylic Halides using N-Bromosuccinimide & Preparation of Benzylic Halides Using N-Bromosuccinimide etc.

Important Questions on Methods of Preparation of Haloalkanes and Haloarenes

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 The major product of the following reaction is: CH3CH2CH=CH2+HBr

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Which of the following is an example of Sandmeyer reaction:

(i)

 C6H5N2+Cl-       +         KI   C6H5I + KCl + N2Benzene diazonium chloride   Iodobenzene

 (ii)

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In the presence of peroxide, hydrogen chloride and hydrogen iodide do not give anti-Markovnikoff’s addition with alkenes, because of the fact that:

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Consider the following reaction

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Identify the structure of the major product X.

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 reaction condition leading to the best yield of   C2H5Cl are –

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The reaction condition leading to the best yield of C 2 H 5 Cl are

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How many products will be formed in above reaction.

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For the given reaction how many products are optically active (all isomers):

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Which of the following will not give haloderivative by addition of HBr?

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Chlorobenzene is prepared commercially by

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The most polar compound among the following is:

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When ethanol is treated with potassium bromide and concentrated H2SO4, _____ is produced.

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Which reagent cannot be used to prepare an alkyl halide from alcohol?

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Chlorobenzene is formed by reaction of chlorine with benzene in the presence of AlCl3. Which of the following species attacks the benzene ring in this reaction?

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Alkyl halides are prepared from alcohols by treating with

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Which of the following alcohols will yield the corresponding alkyl chloride on reaction with concentrated HCl at room temperature?

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Which of the following can be used to prepare 3-bromopropene?

EASY
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The reaction, RCl+NaIAcetoneRI+NaCl, is known as

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The reaction of toluene with chlorine in the presence of iron and in the absence of light yields _____.