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प्रश्न
Why can aryl halides not be prepared by reaction of phenol with \[\ce{HCl}\] in the presence of \[\ce{ZnCl2}\]?
उत्तर
Aryl halides can't be prepared by reaction of phenol with \[\ce{HCl}\] in presence of \[\ce{ZnCl2}\] because the carbon-oxygen bond in phenols has partial double bond character and it, being stronger than a single bond, is difficult to break.
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संबंधित प्रश्न
Draw the structure of major monohalo products in the following reaction:
Which of the carbon atoms present in the molecule given below are asymmetric?
\[\begin{array}{cc}
\phantom{}\ce{HO}\phantom{.....}\ce{OH}\phantom{..}\ce{H}\phantom{.....}\ce{O}\phantom{..}\\
\phantom{..}\backslash\phantom{.....}|\phantom{....}|\phantom{.....}//\phantom{.}\\
\ce{\overset{a}{C} - \overset{b}{C} - \overset{c}{C} - \overset{d}{C}}\\
\phantom{..}//\phantom{.....}|\phantom{....}|\phantom{....}\phantom{.}\backslash\phantom{...}\\
\phantom{}\ce{O}\phantom{......}\ce{H}\phantom{...}\ce{OH}\phantom{...}\ce{H}\phantom{}\\
\end{array}\]
Haloalkanes contain halogen atom (s) attached to the sp3 hybridised carbon atom of an alkyl group. Identify haloalkane from the following compounds.
(i) 2-Bromopentane
(ii) Vinyl chloride (chloroethene)
(iii) 2-chloroacetophenone
(iv) Trichloromethane
Name the following halides according to IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides:
\[\ce{CH3C(C2H5)2CH2Br}\]
Name the following halides according to IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides:
\[\ce{CH3CH2 C(CH3)2CH2I}\]
Name the following halide according to the IUPAC system and classify it as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halide:
CH3CH2C(CH3)2CH2I
Name the following halide according to IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides:
\[\ce{CH3C(Cl)(C2H5)CH2CH3}\]
Name the following halide according to IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides:
\[\ce{CH3 CH2 C(CH3)2 CH2I}\]
Name the following halide according to IUPAC system and classify as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halide:
\[\ce{CH3C(C2H5)2CH2Br}\]
Name the following halide according to IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halide:
\[\ce{CH3C(CI)(C2H5)CH2CH3}\]
