Haloalkanes and Haloarenes

Short Answer Type

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Predict all the alkenes that would be formed by dihydrohalogenation of the following halides with sodium ethoxide in ethanol and identify the major alkene:
1-bromo-1 methyl cyclohexane.

In the 1-bromo-1-methylcyclohexane, all b -hydrogen atom are equivalent. Thus, dehydrohalogenation of this compound gives only one alkene as follows:


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    Arrange the following to the increasing order of boiling point
    (i)

    (ii) CH3CHCH2CH3

    (iii) CH3CH2CH2CH2Br

    (iv) (CH3)3 C—Cl




       
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    A hydrocarbon C5H12 gives only one chlorination product. Identify the hydrocarbon.

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    Predict all the alkenes that would be formed by dihydrohalogenation of the following halides with sodium ethoxide in ethanol and identify the major alkene:
    2, 2, 3-trimethyl-3-bromopentane.
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    What happens when chlorobenzene is heated with sodium and chloromethane in ether?
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    Predict all the alkenes that would be formed by dihydrohalogenation of the following halides with sodium ethoxide in ethanol and identify the major alkene:
    2-Chloro-2-methylbutane
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    Which compound in each of the following pairs will react faster in SN2 reaction with HO–?
    (a) CH3—Br or CH3I
    (b) (CH3)3 Cl or CH3Cl2
    (c)  CH2=CHBr or CH2 = CH—CH2Br.

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    Predict all the alkenes that would be formed by dihydrohalogenation of the following halides with sodium ethoxide in ethanol and identify the major alkene:
    3-bromo-1-ene.
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    Predict all the alkenes that would be formed by dihydrohalogenation of the following halides with sodium ethoxide in ethanol and identify the major alkene:
    Cyclo hexyl methyl bromide.
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    Write the structure of the following compounds halides.
    (a) 2-Bromo-2-methyl propane
    (b) 2-chloro-2-methyl propane
    (c) 2-Bromo-3-methylbutane.
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