Assertion (A): Di-tert-butyl ether cannot be prepared by Williams… - Vidyadip

MCQ

Assertion (A): Di-tert-butyl ether cannot be prepared by Williamson's synthesis.
Reason (R): tert-Butyl bromide on treatment with sodium lert-butoxide preferentially undergoes elimination to form isobutylene and rert-butyl alcohol.

✓
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 true but R is false.
D
A is false but R is true.

✓

Answer

Correct option: A.

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

(a) Both A and R are true and R is the correct explanation of A.
Explanation: Williamson's synthesis is not applicable to tert. alkyl halides because alkoxide ions being both powerful nucleophiles and bases would bring dehydro-halogenation of the tert. alkyl halides to form alkenes preferentially.

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