destroyer ochem #8

[hokie4life]

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what kind of reaction is this? what is it called? I used the C=O to see where Cl would add as a substituent cuz O grps are activating so I thought Cl would add o/p but wait isn't that o/p meta stuff just for aromatic rings?

So then how do you know where cl adds?

 

[nemetrazol]

You are right this has nothing to do with aromaticity. this could have occured in a straight carbon chain as well. alpha protons of a ketone are always acidic. So you just have to know that all alpha protons (protons on carbons next to a ketone) are changed into Cl.
Hope it helps.