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Q.

Assertion: Di-tert-butyl ether cannot be prepared by Williamson’s synthesis.
Reason: tert-butyl bromide on treatement with sodium tert-butoxide preferentially undergoes elimination to from iso-butylene and tert-butyl alcohol.

Select the most appropriate answer from the options given below:

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a

Both A and R are true and R is the correct explanation of A.

b

Both A and R are true but R is not the correct explanation of A.

c

A is false but R is true.

d

A is true but R is false.

answer is A.

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Detailed Solution

  • The correct option is A Both A and R are true and R is the correct explanation of A
    tert-Butyl bromide is 3o alkyl halide.
  •  Due to steric crowding, it prefer to undergo elimination instead of substitution. 
  • Hence both Assertion and Reason are correct statements and Reason is the correct explanation of the Assertion.
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Assertion: Di-tert-butyl ether cannot be prepared by Williamson’s synthesis.Reason: tert-butyl bromide on treatement with sodium tert-butoxide preferentially undergoes elimination to from iso-butylene and tert-butyl alcohol.Select the most appropriate answer from the options given below: