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How can the following conversion be effe...

How can the following conversion be effected ?
(a) phenol to phenolphthalein
(b) phenol to benzene

Text Solution

Verified by Experts

(i) On heating phenol with phthalic anhydride in presence of conc. `H_(2)SO_(4)`, phenolphthalein is obtained.
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SURA PUBLICATION-HYDROXY COMPOUNDS AND ETHERS -SHORT ANSWERS 3 MARKS
  1. Write a note on Friedel Crafts reaction of anisole.

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  2. Complete the following sequence of reaction and Identify A, B and C

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  3. Account for the following: (a) Lower members of alcohols are soluble...

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  4. Why is the tertiary alcohols show greater reactivity towards hydrogen ...

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  5. Give chemical tests to distinguish between propan -2-ol and 2-methyl -...

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  6. How is glycerol obtained commercially ? State its two uses.

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  7. How does glycerol react with (i) PCl(5) (ii) KHSO(4).

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  8. Give a brief account of the following reaction. (i) esterification, (i...

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  9. Account for the following, (i) Phenol has a smaller dipole moment than...

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  10. Identify the isomerism in each of the following paris CH(3)OCH(2)CH(...

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  11. Complete the following equations by writing the missing A,B,C,D etc.

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  12. Give the IUPAC name of each of the following and classify them as 1^(@...

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  13. How will you prepare phenol (i) From chloro benzene (ii) From benzene ...

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  14. How can the following conversion be effected ? (a) phenol to phenolp...

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  15. How is nitroglycerine prepared from glycerol?

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  16. Ethers should never be evaporated to dryness because

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  17. How do ethers react with HI? Give the significance of the reaction.

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  18. What are the oxidation products of glycerol ?

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  19. Account for the following: (i) Phenol does not get protonated readil...

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  20. How do primary, secondary and tertiary alcohols differ in terms of the...

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