Identify the product Z in the following reaction:

Step-by-step solution

The reactant shown is pentane-1,5-diamine dihydrochloride, Cl ^- H ₃ N ^+-( CH ₂)₅- N ^+ H ₃ Cl ^- . When heated, it undergoes an intramolecular cyclization reaction. One of the amino groups acts as a nucleophile, attacking the carbon atom at the other end of the chain and displacing the second amino group as ammonia (which leaves as ammonium chloride). The cyclization of the 5-carbon chain along with the nitrogen atom results in the formation of a 6-membered saturated heterocyclic ring. The product formed is piper