Heating of 2-chloro-1-phenylbutane with EtOK/EtOH gives X as the major product. Reaction of X with `Hg(PAc)_(2)//H_(2)O` followed by gives Y as the major product. Y is :

Treatment of benzene with CO/HCl in the presence of anhydrous "AlCl"_(3)//"CuCl" followed by reaction with Ac_(2)"O"//"NaOAc" gives compound X as the major product. Compound X upon reaction with Br_(2)//Na_(2)CO_(3) , followed by heating at 473 K with moist KOH furnishes Y as the major product. Reaction of X with H_(2)//Pd-C , followed by H_(3)PO_(4) treatment gives Z as the major product. The compound Y is

Treatment of benzene with CO/HCl in the presence of anhydrous "AlCl"_(3)//"CuCl" followed by reaction with Ac_(2)"O"//"NaOAc" gives compound X as the major product. Compound X upon reaction with Br_(2)//Na_(2)CO_(3) , followed by heating at 473 K with moist KOH furnishes Y as the major product. Reaction of X with H_(2)//Pd-C , followed by H_(3)PO_(4) treatment gives Z as the major product. The compound Y is

Treatment of benzene with CO/HCl in the presence of anhydrous "AlCl"_(3)//"CuCl" followed by reaction with Ac_(2)"O"//"NaOAc" gives compound X as the major product. Compound X upon reaction with Br_(2)//Na_(2)CO_(3) , followed by heating at 473 K with moist KOH furnishes Y as the major product. Reaction of X with H_(2)//Pd-C , followed by H_(3)PO_(4) treatment gives Z as the major product. The compound Z is