In the following groups,

$(1) - O A c$

$(2) - O M e$

$(3) - O S O_{2} M e$

$(4) - O S O_{2} C F_{3}$

The order of leaving group ability is:

3 > 2 > 1 > 4

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1 > 2 > 3 > 4

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2 > 3 > 4 > 1

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4 > 3 > 1 > 2

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Solution

The correct option is D $4 > 3 > 1 > 2$
$Leaving group ability \propto \frac{1}{Basicity}$
$Basicty order :^{-} O S O_{2} C F_{3} <^{-} O S O_{2} M e <^{-} O A c <^{-} O M e$
So, leaving group ability will be opposite to this, i.e.
$- O S O_{2} C F_{3} > - O S O_{2} M e > - O A c > - O M e$
Hence, the correct option is option (b).

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Similar questions

- O A c

- O M e

- O S O_{2}

M e

- O S O_{2} C F_{3}

- O A c

- O M e

- O S O_{4} M e

- O S O_{2} C F_{3}

{N H}_{2}^{-}, {N O}_{2}^{-}, {N O_{3}}^{-}

F^{-}, C l^{-}, B r^{-}, I^{-}

{{C H}_{3} C O O}^{-}, {C H}_{3} {S O}_{3}^{-}, {C F}_{3} {S O}_{3}^{-}

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