allerySandmeyer's reaction proceeds via which type of intermediate?
AAryl carbanion
BAryl cation
CBenzyne
DAryl radical
Answer & Solution
Correct answer: D. Aryl radical
Cu(I) reduces the diazonium to an aryl radical (Cu becomes Cu(II)).
The radical abstracts X from CuX, regenerating Cu(I).
Radical mechanism explains why ortho/para regiochemistry from the parent amine is preserved.
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