Em tham khảo nha:
\(\begin{array}{l}
a)\,4 - metyl\,pent - 2 - en\\
b)\,6 - metyl\,hept - 3 - en\\
c)\,3 - metyl\,pent - 2 - en\\
d)\,3,3\, - \dim etyl\,but - 1 - en\\
e)\,2,4 - \dim etyl\,hept - 1 - en\\
f)\,2,5\, - \dim etyl\,\,1,3 - heptadien
\end{array}\)