${C_7}{H_8}\xrightarrow[\Delta ]{{3C{l_2}}}A\xrightarrow{{B{r_2}/Fe}}B\xrightarrow{{Zn/HCl}}C$
$2,7-$ડાયમિથાઈલ$-2,6-$ઓકટાડાઈન $\stackrel{ H ^{+}}{\longrightarrow}$ $'A'$(મુખ્ય નીપજ)