[Lackydoo]

Hello!

I'm having problem deciding which alternative is the correct one.
       
        CH2-CH3
        |
CH2≈C-C≈CH2
           |
           CH2-CH2-CH3

I know the rules of naming carbon chains but I got confused of this one. Should i conclude both double bonds to call it ....buta-1,3-diene or name the 2nd double bond methyl ....hexene? The 2nd suggestion sounds wrong but I would like to get a good explanation if possible.

[Burner]

Since there are no other functional groups present, the longest carbon chain of this molecule must include the two double bonds.

https://en.wikipedia.org/wiki/IUPAC_nomenclature_of_organic_chemistry#Basic_principles

[Lackydoo]

Since there are no other functional groups present, the longest carbon chain of this molecule must include the two double bonds.

https://en.wikipedia.org/wiki/IUPAC_nomenclature_of_organic_chemistry#Basic_principles

Thank you, it makes sense now!