Its should be a only
O of alcohol will attck carbonyl since its more reactive site
Can you explain it why it attacks and why C=0Cl group with Alcl3 not attacks
Yes A according to me too
At first the O already carbonyk grp then we added AlCl3
In the first step, to generate the NO2+ electrophile HNO3 accepts a proton.
All others have lone pair so will make the carbocation stable
Between 1 and 4
1 isnt oxygen?
Source? I had seen same question somewhere.
Seems 0 so I thought 5 ring there