Question

How do you convert:
(i). Chlorobenzene to biphenyl
(ii). Propene to 1-iodopropane
(iii). 2-bromobutane to but-2-ene.

Answer 1

(i). It involved fittig reaction
(ii). `CH_(3)-CH=CH_(2)underset(("Peroxide"))overset("HBr")tounderset("1-Bromopropane")(CH_(3)-CH_(2)-CH_(2)-Br)overset(NaI//"acetone")tounderset("1-Iodopropane")(CH_(3)-CH_(2)-CH_(2)-I)`
(iii). `underset("2-Bromobutane")(CH_(3)-underset(Br)underset(|)(C)H-CH_(2)-CH_(3))overset(KHO(alc.))tounderset("But-2-ene")(CH_(3)-CH=CH-CH_(3))`.