What is the major product 'Z' in the given reaction sequence?
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Diazonium salts are extremely versatile intermediates in aromatic chemistry. Key replacement reactions to remember:
- with H\(_3\)PO\(_2\) or CH\(_3\)CH\(_2\)OH: Replaced by -H (deamination).
- with H\(_2\)O/warm: Replaced by -OH (forms phenol).
- with CuCl/HCl (Sandmeyer): Replaced by -Cl.
- with KI: Replaced by -I.