`Ph -ch_(2)-ch=ch_(2)overset(dil H_(2)SO_(4))rarrX,`
Identify product `'X'` is `:`

Ph-CH_2-CH=CH_2overset(dil. H_2SO_4)rarrA,A is

Consider the following sequence of reactions CH_(2)=CH_(2)overset(PhCO_(3)H)underset(CH_(2)Cl_(2))(rarr)Aoverset(dil.H_(2)SO_(4))(rarr)B The product (B) is

CH_(3)CH_(2)CH_(2)C -= CH overset (BH_(3),THF)rarroverset(H_(2)O //OH^(-))rarr'X' Identify the product 'X':

CH-=CH+H_2O overset (H_2SO_4+HgSO_4)rarrX

CH_(3)COCH_(2)COOC_(2)H_(5)overset(NaBH_(4))rarrX The product X is

Ph-CH=CH=Ph underset(CCI_(4))overset(CI_(2))rarr X overset(2NaNH_(2))rarrYoverset(H_(2),Pd-CaCO_(3))rarrZ Identify product (Z) of the reaction.

Ph-CH=CH-Ph underset(C Cl_(4))overset(Cl_(2))rarr X overset(2NaNH_(2))rarrYoverset(H_(2),Pd-CaCO_(3))rarrZ Identify product (Z) of the reaction.