$C{H_3} - \mathop {\mathop {C{\mkern 1mu} {\mkern 1mu} }\limits_{|{\kern 1pt} {\kern 1pt} {\kern 1pt} } = }\limits_{OH{\kern 1pt} {\kern 1pt} \,\,\,\,} {\mkern 1mu} {\mkern 1mu} C{H_2}\xrightarrow{{{\text{Rearrangem ent}}}}\mathop {C{H_3} - \mathop {\mathop {{\text{ }}C}\limits_{||} }\limits_O - C{H_3}}\limits_{{\text{Acetone}}} $
$H_2C = CH - CH_2 - I \xrightarrow[CC{{l}_{4}}]{HI(excess)}$
${C_6}{H_6} + C{l_2}\xrightarrow{{Sunlight}}\,?$