Name this molecule

CH2 - CH2 - CH3
|
CH3 - CH2 - C = CH2

Question

Name this molecule

                     CH2 - CH2 - CH3
                       |
CH3 - CH2 - C = CH2

frostbite · Answer

Do you have a good guess what the name might be?

anonymous · Answer

Not any idea. I don't get it at all even after looking through my notes.... @Frostbite

frostbite · Answer

Okay. Then let me guide you and find the name together:
We first notice we have a double bond in the middle of the carbon alkane chain. So we start by finding the longest chain that contain the double bond. can you see how long that chain is?

anonymous · Answer

yes, it has 4

frostbite · Answer

A bit longer
|dw:1375051819164:dw|
Try place a ring around the chain using my drawing.

anonymous · Answer

|dw:1375051944208:dw| here is my guess... im not the best at this

frostbite · Answer

Okay the longest chain containing the double bond is the following one :)
|dw:1375052020621:dw|
As it contain 5 carbon and a double bond it most be pentene. the "ene" suffix is for double bonds. now we need to indicate where the double bond is. The number should be as low as possible so we have the two options:
|dw:1375052146465:dw|
or
|dw:1375052176445:dw|

anonymous · Answer

Okay so that means the double bond is 1 and 2 or 5 and 4 depending on which drawing |dw:1375052313223:dw|

frostbite · Answer

No not really. The double MOST have the lowest number which you said is 1
So we now have named this part:
|dw:1375052392648:dw|