Complete the following reactions with appropriate structures of product/reagents :
`C_6 H_5 CH= CH_2 overset(Br_2)to [A] underset((ii) CH_3 I)overset((i)NaNH_2 (3 "equivalent"))to [B]`

Complete the following sequence of reactions with appropriate structures. CH_(3) -CH_(2) -COOH overset(P and ) underset("Bromide") rarr (A) (A) overset((i) Alc. KOH (excess)) underset((ii) H^(oplus))rarr (B) .

Complete the following reaction sequence CH_3 - overset(O ) overset(|| )C-CH_3 underset((ii ) H_2 O) overset((i) CH_3 Mg Br) to (A) underset("Ether ") overset("Na metal ") to (B ) overset(CH_3 -Br) to ( C)

In the reaction : HC -= CH overset(NaNH_(2)) to overset(CH_(3)I)to Y underset(H^(+))overset(H_(2)O, HG^(2+))to Z ,