You visited us 1 times! Enjoying our articles? Unlock Full Access!

Tautomerism

Which of the ...

Question

Which of the following compounds favours $S_{N} 2$ mechanism?

C H_{3} - C H_{2} - B r

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C H_{3} - O - C H_{2} B r

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C_{6} H_{5} - C O - C H_{2} B r

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C H_{3} - C (C H_{3})_{2} C H_{2} B r

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C $C_{6} H_{5} - C O - C H_{2} B r$
$S_{N} 2$ mechanism favours by formation of unstable carbocation.
Among all given compounds, $C_{6} H_{5} - C O - C H_{2} B r$ forms least stable carbocation due to carbonyl group at alpha position of carbon atom (carbocation forms will be unstable due to resonance and -M effect of carbonyl group).
So it favours $S_{N} 2$ mechanism most.

Suggest Corrections

Similar questions

{C H}_{3} {C H}_{2} {C H}_{2} B r

{C H}_{3} {C H}_{2} {C H}_{2} {C H}_{2} B r

{({C H}_{3})}_{2} C H {C H}_{2} B r

{({C H}_{3})}_{3} C B r

I_{2} / N a O H

β

K O H

C H_{3} - H | C | C H_{3} - C H_{2} B r

C H_{3} - C H_{2} - B r

C H_{3} - C H_{2} - C H_{2} - B r

β

{C H}_{3} - H | C | {C H}_{3} - {C H}_{2} B r

C H_{3} - C H_{2} - B r

C H_{3} - C H_{2} - C H_{2} - B r

O H^{-}

C H_{3} - C H | C_{2} H_{5} - B r

C H_{3} - B r | C | C_{2} H_{5} - C H_{3}

C H_{3} - C H | C_{2} H_{5} - C H_{2} B r

Join BYJU'S Learning Program