\(\mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}_2 \xrightarrow{\mathrm{Y}=\mathrm{HBr} / \mathrm{Acetic} \text { acid }} \mathrm{CH}_3-\mathrm{CHBr}-\mathrm{CH}_3\)
$\mathop I\limits_{({C_3}{H_6}C{l_2})} \xrightarrow{{KOH(aq)}}II\xrightarrow[{(ii){H_2}O/{H^ + }}]{{(i)C{H_3}MgBr}}III\xrightarrow{{Anhy.ZnC{l_2} + Conc.HCl}}$ તરત જ terbidity મળે છે