JEE MAIN - Chemistry (2018 - 15th April Evening Slot - No. 8)
On treatment of the following compound with a strong acid, the most susceptible site for bond cleavage is :
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Cl $$-$$ O2
O2 $$-$$ C3
C4 $$-$$ O5
O5 $$-$$ C6
Explanation
Here the lone pair of electrons on O2 is involved in resonace with C = C.
So, O2 will not be protonated.
The lone pair electrons of O5 is not involved in resonance with any C = C. So, O5 can be protonated.
When we use strong acid like HCl then chloride ion will attack least substituted C atom (C6).
_15th_April_Evening_Slot_en_8_2.png)
So, O2 will not be protonated.
The lone pair electrons of O5 is not involved in resonance with any C = C. So, O5 can be protonated.
When we use strong acid like HCl then chloride ion will attack least substituted C atom (C6).
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