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प्रश्न
Why can aryl halides not be prepared by reaction of phenol with \[\ce{HCl}\] in the presence of \[\ce{ZnCl2}\]?
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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 structures of major monohalo products in each of the following reaction:
Draw the structure of the major monohalo product in the following reaction:
Name the following halide according to the IUPAC system and classify it as an alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halide:
CH3CH2C(CH3)2CH2I
Name the following halide according to the IUPAC system and classify it as an alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halide:
(CH3)3CCH2CH(Br)C6H5
m-Xylene reacts with Br2 in presence of FeBr3, what are products formed:
Identify the compound Y in the following reaction.
Which of the following is an example of vic-dihalide?
Which of the products will be major product in the reaction given below? Explain.
\[\ce{CH3CH = CH2 + HI -> \underset{(A)}{CH3CH2CH2I} + \underset{(B)}{CH3CHICH3}}\]
Match the structures of compounds given in Column I with the classes of compounds given in Column II.
| Column I | Column II | |
| (i) | \[\begin{array}{cc} \ce{CH3 - CH - CH3}\\ |\phantom{..}\\ \ce{X}\phantom{..} \end{array}\] |
(a) Aryl halide |
| (ii) | \[\ce{CH2 = CH - CH2 - X}\] | (b) Alkyl halide |
| (iii) |  |
(c) Vinyl halide |
| (iv) | \[\ce{CH2 = CH - X}\] | (d) Allyl halide |
Two isomers (A) and (B) with molar mass 184 g/mol and elemental composition C 52.2%; H 4.9% and Br 42.9% gave benzoic acid and p-bromobenzoic acid, respectively on oxidation with KMnO4. Isomer ‘A’ is optically active and gives a pale yellow precipitate when warmed with alcoholic AgNO3. Isomer ‘A’ and ‘B’ are, respectively:
Name the following halides according to the IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides:
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:
\[\ce{CH3C(C2H5)2CH2Br}\]
Name the following halide according to the IUPAC system and classify it as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halide:
\[\ce{CH_3CH_2C(CH_3)_2CH_2I}\]
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 as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halide:
\[\ce{CH3C(Cl)(C2H5)CH2CH3}\]
Name the following halides according to IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides:
\[\ce{CH3CH2C(CH3)2CH2I}\]
IUPAC name of \[\begin{array}{cc}
\phantom{}\ce{CH3}\phantom{..........}\ce{Br}\phantom{........}\\
\phantom{}|\phantom{................}|\phantom{.........}\\
\phantom{}\ce{CH3CHCH2CHCHCH2CH3}\phantom{}\\
\phantom{}|\phantom{..}\\
\phantom{..}\ce{CH3}\phantom{}
\end{array}\] is ______.
The IUPAC name of the compound shown below is:
Which of the following is an example of vicdihalide?
