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How many of the following ethers CANNOT ...

How many of the following ethers CANNOT be prepared by Williamson's synthesis?
`CH_(3)OCH_(2)CH_(3),C_(6)H_(5)OCH_(3), (C_(6)H_(5))_2O, (CH_(3))_(3)COCH_(3),(C_(2)H_(5))_2O, (CH_(3))_(3)C-O- C(CH_3)_(3)`

A

2

B

4

C

5

D

6

Text Solution

Verified by Experts

The correct Answer is:
A
Williamson's synthesis required that the alkyl halide should be `1^(@)` and alkoxide ion may be `1^(@),2^(@)` or `3^(@)` . Thus, two ethers which cannot be prepared by Williamson's synthesis are :
`(C_(6)H_(5))_(2)O, (CH_(3))_(3)COC(CH_(3))_(3)`.
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How many of the following ethers canot be prepared by Williamson's sythensis? CH_(3)OCH_(2)CH_(3),C_(6)H_(5)OCH_(3),C_(6)H_(5)OCH_(2)CH_(3),(C_(6)H_(5))_(2)O, (CH_(3))_(3)COCH_(3),(CH_(3))_(3)COCH_(2)CH_(3),(CH_(3))_(3)COC(CH_(3))_(3),(C_(2)H_(5))_(2)O,C_(6)H_(5)CH_(2)OC_(6)H_(5) .

How many of the following of ethrs cannot be prepared by Williamson's synthesis CH_(3)OC_(2)H_(5),(C_(6)H_(5))_(2)O,C_(6)H_(5)OCH_(3),C_(6)H_(5)OC_(2)H_(5) (CH_(3))_(3)COC(CH_(3))_(3), (C_(2)H_(5))_(2)O,C_(6)H_(5)CH_(2)OC_(6)H_(5) , (CH)_(3))_(3)COCH_(3),(CH_(3))_(3)COCH_(2)CH_(3) .

Knowledge Check

  • Which of the following undergoes haloform reaction? (i) CH_(3)CH_(2)COCH_(2)CI (ii) C_(6)H_(5)COCH_(3) (iii) C_(6)H_(5)COCHI_(2) (iv) CH_(3)CH_(2)COCCI_(3)

    A
    only (ii)
    B
    (ii) and (iv)
    C
    (i), (ii) and (iv)
    D
    all the four

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