`1)` \(CH_3-CH_2-CH=CH_2\)
`but-1-en`
`2)` \(CH_3-CH=CH-CH_2-CH_3\)
`pent-2-en`
`3)` \(CH_3-C\left(CH_3\right)_2-CH=CH_2\)
`3,3-đimetylbut-1-en`
`4)` \(CH_3-CH=CH-C_2H_5\)
Cũng như `2)` thôi bạn \(-C_2H_5\) cũng là \(-CH_2-CH_3\)
`5)` \(CH_3-C\left(CH_3\right)_2-CH_2-CH=CH_2\)
`4,4-đimetyl-pent-1-en`
`6)` \(CH_3-CH=CH-CH_2-CH_3\)
Cũng là `2)`