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Which of the following alcohols on dehyd...

Which of the following alcohols on dehydration with conc. `H_(2)SO_(4)` will yield But-2-ene ?

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
B
The reaction involves the formation of carbocation as intermediate. Hence more the stability of the carbocation, more will be the rate of reaction. Let us draw the structure of the corresponding carbocation and observe the relative stability of the four benzyl carbocations.
The relative stability of the four carbocations is
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DISHA PUBLICATION-ALCOHOLS, PHENOLS AND ETHERS-Exercise - 2 : Concept Applicator)
  1. Which of the following compound is differentiated by NaHCO(3) as well ...

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  2. Which of the following is most reactive towards aqueous HBr?

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  3. Which of the following alcohols on dehydration with conc. H(2)SO(4) wi...

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  4. Dehydration of alcohol by conc. H(2)SO(4) takes place according to fol...

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  5. Product is

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  6. During the dehydration of alcohols to alkenes by heating with conc. H(...

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  7. B(mix)overset(conc.HI)underset(2) larr (CH(3))(3)C-O-CH(3) overset("an...

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  8. ClCH2CH(2)OH is stronger acid than CH(3)CH(2)OH because of :

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  9. CH(3)-CH=CH(2)overset((i)Hg(OA c)(2)//H(2)O)underset((ii)NaBH(4))rarr ...

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  10. What is product of the following sequence of reactions ? (CH(3))(2)C...

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  11. Identify the nature of product in the following reaction

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  12. Which electrophile is likely to be formed as an intermediate in the fo...

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  13. Phenol is

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  14. What is the structure of the major product when phenol is treated with...

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  15. The structure of the compound that gives a tribromo derivative on trea...

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  16. "Phenol "overset(NaNO(2)//H(2)SO(4))rarr B overset(H(2)O)rarr C overse...

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  17. The major product P in the following reaction is (CH(3))(3)COH+C(2)H...

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  18. An ether, (A) having molecular formula, C(6)H(14)O, when treated with ...

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  19. HBr reacts with H(2)C=CH-OCH(3) under anhydrous conditions at room tem...

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  20. CH(3)underset(CH(3))underset(|)(CH)-CH=CH(2)underset((ii)H(2)O(2)//OH)...

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